Suppose the size of a process is 10,000 bytes and the relocation register is loaded with value 5000, which of the following memory address this process can access?
Select one:
a. physical address 4,500
b. logical address 10,350
c. None of the above
d. physical address 10,350
d. physical address 10,350
Answers
None of the above memory address this process can access. The space required is 4608 bytes. A memory address is a reference to a particular memory region that is utilised by hardware and software at different levels.
What is the size of a memory address?An individual byte (or eight bits) of storage is identified by one address. A series of consecutive addresses may be used to store data bigger than one byte.
The page size is 256 bytes, and the page field is 8 bits wide.The first level page table points to 1024 second level page tables, each of which points to 256 third level page tables, each of which contains 64 pages using the subdivision described above. The program's address space is 1024 pages, so 16 third-level page tables are required.Therefore we need 16 entries in a 2nd level page table, and one entry in the first level page table. Therefore the size is: 1024 entries for the first table, 256 entries for the 2nd level page table, and 16 3rd level page table containing 64 entries each. Assuming 2 bytes per entry, the space required is 1024 * 2 + 256 * 2 (one second-level paget table) + 16 * 64 * 2 (16 third-level page tables) = 4608 bytes.To learn more about memory address refer :
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Related Questions
A student is holding a marble in his hand. What are the equal and opposite forces that are acting on it?
Answers
Answer:
Gravity and his hand
Explanation:
An appropriate speed for glacial movement generally is:
six centimeters a year
one meter a week
one meter per hour
two hundred kilometers a year
Answers
An appropriate speed for glacial movement generally is six centimeters a year.
What is a glacier?A glacier is a vast, slow-moving mass of snow and ice that collects in mountain valleys and spreads outwards, frequently flowing like a very slow river. It forms when snow accumulation exceeds snowmelt, and the compacted snow transforms into ice, a process known as "firnification." This ice subsequently flows downhill under the weight of additional snow accumulation, occasionally for hundreds of miles.
What is the speed of glacier movement?Glaciers can move up to several meters per day, but they typically move at a much slower pace. Even though the speed of a glacier might vary widely based on factors like slope, basal conditions, temperature, and ice thickness, a reasonable speed for glacial movement is six centimeters a year. Furthermore, the rate of movement can vary depending on the time of year and the time of day.
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The weight, also known as the force of gravity acting on an object, can be determined by using the
formula Fg = mg, where m is the mass of an object and g is the acceleration due to gravity (on
Earth, g = 9.8 m/s2).
What is the weight of an object on Earth whose mass is 30.6?
Answers
Answer:
4.9
Explanation:
yan po ang sagot thank 7
sna nakatulong divide molng sya para makuha mo yung sagot.
thank u ulit mars /pre
A trapezoid is a 4-sided polygon which has 2
parallel sides.
Write an expression that represents the
perimeter of a trapezoid whose sides have
length a, b, c and d.
Use this expression to find the perimeter of
the trapezoid when a= 12. b
16. c = 16.
and d = 20.
Answers
I’m pretty sure that’s it
Billiard ball A, mass 0. 17 kg, moving due east with a velocity of 4. 0 m/s, strikes stationary billiard ball B, also mass of 0. 17 kg. After the collision, ball A moves off at an angle of 30° north of east with a velocity of 3. 5 m/s, and ball B moves off at an angle of 60 ° south of east. What is the speed of ball B?
Answers
Answer: The system that is colliding maintains its momentum. As a result, the ball B's speed is 2m/s (option -a) when it has the same mass as the ball A.
Describe momentum.
A body's capacity to produce the greatest displacement from an applied force is known as momentum. It is the result of adding mass and speed. The two bodies' total initial momentum and total final momentum are equal in a collision.
Consequently, let u be the starting velocity and v be the ending velocity.
m₁ u₁+ m₂ u₂ = m₁ v₁ + m₁ v₂
m₁ = 0.17 kg
u₁ = 4 m/s
m₂ = 0.17 kg
u₂ = 0
v₁ = v₁ cos 30° = 3.5×√3/2
v₂ = v₂cos 60 = v/2
0.68 kg m/s = (0.17 × 3.5×√3/2 ) + (0.17 × v₂/2)
3.5×√3/2/2 + v₂/2 = 4
3.5√3 + v₂ = 8
then v₂ = 8-3.5(1.732)
v₂ = 1.94m/s. = 2m/s
Explanation:
Which are most likely to be used during a routine visit to the dentist?
CO
radiopharmaceuticals and X-rays
ultrasound and X-rays
lasers and tracers
ultrasound and radiopharmaceuticals
Answers
Answer:
The most likely items to be used are;
Ultrasound and X-rays
Explanation:
A routine visit to a dentist consists of two areas of activities, including;
a) Dental examination and check up
b) Oral prophylaxis, and dental cleaning
The dental examination may involve the use of X-rays, which allow the detection of cavities between the teeth
The dental cleaning can be carried out with the use of an ultrasound cleaner, which allow the cleaning of sensitive teeth without hurting the patient
Therefore, the items most likely to be used during a routine dental visit are ultrasound and X-rays
Answer:
ultrasound and x-rays
Explanation:
The formula for calculating density, D, is =/, where M represents mass and V represents volume. For liquids, volume is often given in cubic centimeters (cc),which is the same as cm3. If the density of an unknown liquid is 2.1 g/cc, what is the mass of 400 cc of the unknown liquid in grams (g)? *
A. 840g
B. 190g
C.005g
D. 8.4g
Answers
Answer:
B. 190g
Explanation:
400/2.1 = 190
What is the purpose of using the string to tie the forelegs and hind legs during dissection?
Answers
Answer:
To holds the legs apart without rupturing any vein
Explanation:
The purpose of using string to tie the forelegs and hind legs during dissection is to hold the legs apart without rupturing ant vein or artillery for easy dissection procedure( the dismembering of the body of a deceased animal or plant to study its anatomical structure)
when tieing the forelegs and the hind legs the same string is used to tie them and the string is then passed/looped under the dissecting table/tray this way the legs will be held apart and the dissection can commence.
23. an airplane propeller starts to turn from rest and speeds up to 2 radians/s after turning 6 radians. how long does it take, in s . a. 6 b. 4 c. 3 d. 2 e. 1
Answers
The time it takes for the airplane propeller to turn from rest to a speed of 2 radians/s can be determined using the equation θ = 0.5αt^2, where θ is the angle turned, α is the angular acceleration, and t is the time.
Given that the propeller turns 6 radians and reaches a speed of 2 radians/s, we can solve for t:
6 = 0.5αt^2
Since the initial angular speed is zero, the equation simplifies to:
6 = 0.5αt^2
Rearranging the equation, we have:
t^2 = 12/α
To find the time, we need the value of α (angular acceleration), which is not provided in the question. Therefore, we cannot determine the exact time it takes for the propeller to reach a speed of 2 radians/s. The correct answer cannot be determined from the options provided.
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explain how to perform the exercise leg raises
Answers
today, this part of kansas is rolling hills and farm fields. describe the environment ni which the sediment ni this rock sample (photograph )x was deposited there about 290 million years ago.
Answers
The environment was quite different. Based on the sediment in the rock sample (photograph X), it is likely that this area was once covered by a shallow sea or ocean. The presence of fine-grained sediment, such as silt and clay, suggests that the water was relatively calm and quiet.
About 290 million years ago, during the Paleozoic era, Kansas was covered by a shallow sea known as the Permian Sea. The sedimentary rocks found in Kansas, including limestone, sandstone, and shale, were deposited in this sea over millions of years.
The environment in which sediment is deposited can provide clues about the conditions of the area at the time. Based on the type of rock you mentioned, it is likely that the sediment was deposited in a marine environment, such as a shallow sea or a shoreline. The limestone could have been formed from the accumulation of shells and other organic material from marine organisms, while the sandstone and shale could have been deposited by erosion and transport of sediment from nearby land.
In terms of the landscape, it is possible that the area that is now Kansas was a low-lying coastal plain, with rivers and streams carrying sediment into the sea. The rolling hills and farm fields seen today are a result of more recent geologic processes, such as erosion and deposition by wind and water.
Overall, the sediment in the rock sample you mentioned was likely deposited in a marine environment in what is now Kansas, during the time period of the Permian Sea.
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A bow is drawn so that it has 40 J of potential energy. When fired, the arrow will have a kinetic energy of: Select one: O a. 80) o b. 20) O 0.60) O d. 40)
Answers
When a bow is drawn and has 40 J of potential energy, the arrow's kinetic energy when fired will be:
Your answer: d. 40 J
Explanation:
Potential energy is the energy that an object possesses due to its position, configuration, or state of being. It is stored energy that has the potential to do work in the future. The amount of potential energy that an object has depends on its position or configuration relative to other objects or systems. For example, a bow that is pulled back has potential energy that can be released as kinetic energy when it is released.
Kinetic energy, on the other hand, is the energy that an object possesses due to its motion. It is the energy that an object possesses because it is in motion and is able to do work by causing a change in another object's motion or position. The amount of kinetic energy that an object has depends on its mass and its velocity. For example, a moving car has kinetic energy that can be transferred to another object if it collides with it.
When the bow is drawn, it stores potential energy. When fired, this potential energy is converted into kinetic energy for the arrow. In an ideal situation with no energy loss, the arrow's kinetic energy will be equal to the bow's potential energy. Therefore, the arrow will have a kinetic energy of 40 J.
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Which of the following are examples of negative brain plasticity? (Note: You will
choose more than 1.)
1- the human brain has shrank in size due to changes in how we live (accessing
food, housing, etc.).
2- the fact it is easier for children to learn new things than adults.
3. losing a chunk of brain the size of a tennis ball over the last 20,000 years.
4- The fact that negative habits, addictions, and negative self-talk are very difficult
to change.
Answers
Answer:
Negative neuroplasticity. Environmental factors that decrease cognitive reserve, inhibits neuronal connections and causes sparse neuronal connections. The result if that over time the brain becomes less efficient.A lot of the ways in which our brain function degrades that we typically think of as part of “just getting old” is really negative neuroplastic change. As people grow older, they unknowingly contribute to their brain's decline by not using and challenging it as much. For example, a person retires from work.Both positive neuroplasticity and negative neuroplasticity refer to the actual morphological and neurochemical changes that occur in the nervous system and brain between neurons in response to adapting to environmental demands or press (Figure 1; Vance & Crowe, 2006; Vance, Roberson, McGuiness, & Fazeli, 2010).
Question 1
2 pts
Sally, who has a mass of 56 kg, is sledding at the park. She places her 7-kg sled at the
top of a hill and then runs with a velocity of 3 m/s and jumps on it. What is the
combined velocity of Sally and the sled right after she jumps on, in m/s? (Round your
answer to one decimal place if necessary.)
Question 2
2 pts
Answers
If one were to stack thick fabric fabric on top of one another, then push the opposite ends towards one another, resulting and bending and rumpling, this would illustrate what physical process?
Answers
Answer:
The answer is "folding".
Explanation:
It is a physical reconfiguring of the process, which gives a fabric a softer, lightweight shape. It is achieved in a far less simple space to carry or store products.
When one places effect sizes on each other, instead move the different ends to each other and fold and roll it, its linear function of Folding would be illustrated. Except in geography, the piling process naturally creates space to makes the surface clearer and lighter.In a physics lab, students take a long piece of string and cut it into two unequal pieces. One piece is used to suspend a large weight. The second piece is tied to the bottom of the weight as seen in the diagram below. Student 1 predicts that the upper string will always break first since it has to support the weight and the applied force, while Student 2 disagrees and predicts that the shorter piece of string will always break first if you pull slowly but with enough force to exceed the strength of the string.
(a) Which aspect(s) of Student 1’s reasoning, if any, are correct? Explain your answer.
(b) Which aspect(s) of Student 2’s reasoning, if any, are correct? Explain your answer.
(c) Which aspect(s) of both Student 1’s and 2’s reasoning, if any, are incorrect? Explain your answer.
(d) The experiment is performed and both students are surprised to learn that whether
the upper or lower string breaks first depends on whether you pull slowly or with a
sudden pull. Resolve the two lines of reasoning of Student 1 and Student 2 by
explaining the results of the experiment in a clear, concise paragraph.
Answers
Answer:
(a) The aspect of the upper string supporting the weight and the applied force
Student 1 is correct because the upper string is the source of support of the large weight and the force applied to the short string reacts at the support of the long string
(b) The aspect of Student's (2) reasoning that is correct is that the shorter piece of string will always break first, however, the statement is only true for sudden pull due to the increased force experienced by the shorter string from a more rapid change in momentum
(c) The aspect of Student 1's statement that is incorrect is the that the upper string will always break first
The aspect of Student 2's statement that is incorrect is the that the shorter piece of string will always break first
(d) A string will break when subject to a force equivalent to its breaking force. The force experienced by the string increases as the rate of pull (suddenness) increases and the suddenness increases inversely with the length of the string, as such the shorter lower string will break first from a sudden pull before the force of the pull is completely transmitted to the upper string. Whereby the lower string is slowly pulled, the force is evenly transmitted to the upper string which is then taking up the load of the weight and the applied force together and is likely to break first
Explanation:
a mass-spring-damper system has a mass of 100 kg. its free response amplitude decays such that the am- plitude of the 31st cycle is 20% of the amplitude of the 1st cycle. the system takes 60 seconds to complete 30 cycles. estimate the damping constant c and the spring constant k.
Answers
The oscillator's mass (m) and stiffness (k) are used to calculate the critical damping coefficient (cc) using the following formula: cc = 2(km).
The mass is increased to the starting amplitude position A0 before being let go. In a fluid with viscosity, the mass oscillates about the equilibrium position, but the amplitude gets smaller with each oscillation. According to this website, the formula for the damping force,
Fd, is Fd=-cv,
=100 * 60/30
=600
where c stands for the damping coefficient and v for the velocity. According to Hooke's Law, a spring's force is proportional to how far it has moved from its rest position. Where F is the force applied by the spring, F = -k * x x
is the displacement of the spring from rest in meters, and k is the "spring constant."
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Which type of polarity is it if the magnetite is aligned with the south pole?
Answers
If the magnetite is aligned with the south pole, it indicates that the magnetite possesses a north pole. Magnetite is a naturally occurring mineral that exhibits strong magnetic properties. Like any magnet, it has two magnetic poles, the north pole and the south pole.
In a magnet, opposite poles attract each other, while like poles repel each other. The north pole of a magnet is attracted to the south pole of another magnet, while the north poles repel each other, as do the south poles.
Therefore, if the magnetite is aligned with the south pole, it means that the opposite, or north pole, is pointing in the opposite direction. The alignment of the magnetite with the south pole suggests that the north pole of a magnet would be attracted to it. This corresponds to the concept of magnetic polarity, where the north and south poles of magnets exhibit opposite polarities and attract each other.
Understanding the polarity of magnets is essential in various applications, such as magnetic compasses, electric motors, and magnetic storage devices. The proper alignment and recognition of the north and south poles are crucial for utilizing the attractive and repulsive properties of magnets in different technological and scientific contexts.
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Find a unit vector in the direction of the vector [−56/105]. A unit vector in the direction of the given vector is [. (Type integers or simplified fractions.)
Answers
The unit vector in the direction of the given vector is [-1, 1/2].
A unit vector in the direction of the given vector [−56/105], we need to normalize the vector by dividing each component by its magnitude.
The magnitude of the vector [−56/105] can be calculated as:
|[-56/105]| = \(\sqrt {((-56/105)^2)\) = \(\sqrt {(3136/11025)\) =\(\sqrt {(56^2 / 105^2\)) = 56/105
Normalize the vector, we divide each component by the magnitude:
[-56/105] / (56/105) = [-56/105] * (105/56) = [-1, 1/2]
a unit vector, we divide each component of the vector by its magnitude.
Dividing [-56/105] by (56/105) yields [-56/105] * (105/56) = [-1, 1/2].
A unit vector in the direction of the given vector is [-1, 1/2]. This means that the vector [-1, 1/2] has the same direction as the original vector [-56/105], but its length or magnitude is equal to 1.
Unit vectors are useful as they represent only the direction of a vector, allowing for easy comparison and calculation without concerns for the vector's scale or magnitude.
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Write 3.5 x 105 in standard form.
Answers
sorry if this is wrong
A balloon and a mass are attached to a rod that is pivoted at P.
The balloon is filled with helium, a gas less dense than air, so that it applies an upward force on
the rod.
The rod is horizontal and stationary.
Which action causes the rod to rotate clockwise?
A Move both the balloon and mass 10 cm to the left.
B Move both the balloon and mass 10 cm to the right.
C Move both the balloon and mass to the 25 cm mark.
D Move the balloon to the 20 cm mark and the mass to the 30 cm mark.
Answers
Answer:
The correct option is;
B Move both the balloon and mass 10 cm to the right
Explanation:
Given that the system is in equilibrium, we have;
Force of balloon = \(F_b\)↑
Force of mass = \(F_m\) ↓
The direction of the balloon is having an upward motion which gives a clockwise moment or motion to the rod while the direction of the force of the mass weight is downwards, giving the rod an anticlockwise moment
for the rod to rotate clockwise, the moment of the balloon should be larger than that of the rod
At the present equilibrium we have;
\(F_b\) × 30 = \(F_m\) × 20
Therefore;
\(F_m\) = 1.5×\(F_b\)
Moving both balloon and mass 10 cm to the right gives;
The moment of the balloon = \(F_b\) × (30 - 10) = \(F_b\) × 20 = 20×\(F_b\),
The moment of the mass = \(F_m\) × (20 - 10) = \(F_m\) × 10
When we substitute \(F_m\) = 1.5×\(F_b\) in the moment equation for the mass, we have;
The moment of the mass = \(F_m\) × 10 = 1.5×\(F_b\) ×10 = 15×\(F_b\)
Therefore, the balloon now has a larger momentum than that of the mass and the rod will rotate clockwise.
Answer:
the answer is
Explanation:
the ballon's force is clockwise will the mass's force is anticlockwise
the mass will have a smaller moment due to less distance, while the balloon will have a greater distance, therefore more moment
Why do psychologists conduct twin studies? What is the major
benefit of this?
Answer in one to two complete sentences.
Answers
Answer:
Its to make sure that the results are reliable.
If you make only one test, the person could have messed up so if there is a twin test, you know something is screwed up in the results so they know the try again and make sure they don't skrew up again.
Explanation:
Density, temperature, and pressure increase as you move inward in the interior of the Sun. This means that the weight of the star pushing inward at a given radius _________ as you move inward toward the core.
a. increases
b. decreases
c. stays the same
d. There is not enough
Answers
Answer:
d
Explanation:
Density, temperature, and pressure increase as you move inward in the interior of the Sun. This means that the weight of the star pushing inward at a given radius _________ as you move inward toward the core.
a. increases
b. decreases
c. stays the same
d. There is not enough
a box with a mass of 50 kg is accelerating to the right because of an applied force of 250 n friction between the box and the surface below is negligible. what is the acceleration? (in meters/sec2)
Answers
The acceleration of a box with a mass of 50 kg that is accelerating to the right due to an applied force of 250 N and with negligible friction between the box and the surface below is 5 m/s².
Acceleration is defined as the rate of change of velocity of a moving object over time. The magnitude of the velocity of the object changes at a constant rate as a result of acceleration. The acceleration of an object may be calculated using the following formula:
a = (Fnet)/m
where Fnet is the net force acting on the object, and m is the object's mass.
Therefore, using the formula;
a = (Fnet)/m
where m = 50 kg and Fnet = 250 N,
Therefore;
a = 250 N / 50 kg
a = 5 m/s²
Thus, the acceleration of the box is 5 m/s².
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Bone has a Young's modulus of about 1.8 x 1010 Pa. Under compression, it can withstand a stress of about 1.51 × 108 Pa before breaking. Assume that a femur (thigh bone) is 0.5 m long, and calculate the amount of compression this bone can withstand before breaking. Answer in units of mm.
Answers
The femur can withstand a compression of about 4.1945 mm before breaking.
Compression calculations explained.We can use the formula for compressive stress to calculate the amount of compression that the femur bone can withstand before breaking:
Stress = Force / Area
where the force is the force applied to the bone and the area is the cross-sectional area of the bone.
To find the cross-sectional area of the femur bone, we can assume that it has a circular cross-section and use the formula:
Area = πr^2
where r is the radius of the cross-section.
Since the length of the femur bone is 0.5 m, we can assume that the cross-sectional area remains constant along its length.
Let's assume that the force required to break the bone is the maximum compressive stress that it can withstand, which is 1.51 × 10^8 Pa. We can rearrange the stress formula to solve for the force.
We can use the equation for strain under compression:
strain = stress / Young's modulus
where stress is the maximum stress the bone can withstand before breaking, and Young's modulus is a measure of the stiffness of the material. The strain is a measure of how much the bone compresses under stress.
To find the compression distance, we can rearrange this equation to solve for the compression distance:
compression distance = strain x original length
where the original length is the length of the bone before compression
Substituting the given values:
stress = 1.51 × 10^8 Pa
Young's modulus = 1.8 × 10^10 Pa
original length = 0.5 m
First, we can calculate the strain:
strain = stress / Young's modulus = (1.51 × 10^8 Pa) / (1.8 × 10^10 Pa) ≈ 0.008389
Next, we can calculate the compression distance:
compression distance = strain x original length = (0.008389) x (0.5 m) = 0.0041945 m
Finally, we can convert the result to millimeters:
compression distance = 0.0041945 m x (1000 mm/m) = 4.1945 mm
Therefore, the femur can withstand a compression of about 4.1945 mm before breaking using Stress = Force / Area
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A wether forecaster reported that the total amount of rainfall for the month was 0.75 inch. He also reported that this amount was 0.55 inch below the average amount of rainfall for the same month during the last ten years. What was the average amount of rainfall, in inches, for this month during the last ten years?
Answers
The prediction for average amount of rainfall for the for the month during last 10 years is given as
A weather forecaster reported that the total amount of rainfall for the month was 0.75 inch
The prediction for the same month this amount was 0.55 inch below the average amount of rainfall for the same month during the last ten years.
Summary table given by the forecaster =
Amount of rainfall for the month : 0.75 in.
Compared to average amount of rainfall for the month -0.55 in.
The average amount of rainfall , for this month during last ten years is to be determined
Let A be the average amount of rainfall for the month in the last ten years
The total amount of rainfall for the month = 0.75 inch
Given that this amount is 0.55 inch less than the average amount of rainfall for last 10 years hence we can write the Equation as formulated below
So the Average amount of rainfall for the for this month during last 10 years is given as
U 2 can help me by marking as brainliest.........
Answer:
Yes, my answer is the same.
What is the frequency of a mechanical wave that has a
velocity of 1.70 m/s and a wavelength æf 12.05 m?
Answers
Explanation:
v= (f) x ( lambda)
1.7 ms^-1/12.05 m = f =o.14 hz
An object travels 8 meters in the first second of travel, 8 meters again during the second second of travel, and 8 meters again during the third second. Its VELOCITY in meters per second is O 0 0 5 O 8 O 10 O more than 10 MARE
Answers
Answer:
V = (S2 - S1) / t
V = 8 m / 1 s = 8 meters /second
Already moving at 8 m/s , wendy pushes yasmine in her sled with a diagonal 300.0 n force. th coefficient of kinetic friction between yasmine's sled and the ground is 0.30. how fast will yasmine be going after wendy pushes him for 15.00m
Answers
Answer:
You must exert a force of 4.5 N on a book to slide it across a table.
Explanation:
PLEASE HELP 50 AND BEST ANSWER
Begin by printing out a copy of the periodic table. Use the file attached to the assignment page or download the file from the Course Resources folder.
1. Label the rows as the electron energy levels.
2. Label the number of valence electrons in Columns 1,2, and 13-18.
3. Label the metals, semi-metals, and non-metals using different colors. Make sure you don't obscure any of the information about different elements by coloring.
4. Label the ion charges for elements in the first 3 rows. Remember all the elements in Columns 1,2,16,17,18 will always have the same charge. Elements in Columns 13,14, or 15 can have different charges within the same row it's especially useful to write these charges on your periodic table. --
5. Label the trends for atomic size, ionization energy, and electron affinity.
Answers
Label the rows as the electron energy levels:
The rows of the periodic table are also known as periods. There are seven periods, and each period corresponds to a particular energy level. You can label them from 1 to 7, starting from the top row.
What are the responses to other questions?Label the number of valence electrons in Columns 1, 2, and 13-18:
Columns 1 and 2 are the s-block elements, and they have 1 and 2 valence electrons, respectively. Columns 13-18 are the p-block elements, and they have 3 to 8 valence electrons, respectively. You can label the number of valence electrons in each column.
Label the metals, semi-metals, and non-metals using different colors:
Metals are on the left side of the periodic table, semi-metals are in the middle, and non-metals are on the right side. You can use different colors to label them without obscuring any of the information about different elements.
Label the ion charges for elements in the first 3 rows:
Elements in the first 3 rows of the periodic table have predictable ion charges. The alkali metals (Group 1) have a charge of +1, the alkaline earth metals (Group 2) have a charge of +2, and the elements in Group 13 have a charge of +3. For Groups 15, 16, and 17, the charges are -3, -2, and -1, respectively. The noble gases (Group 18) are unreactive and do not form ions. You can write these charges for each element in their respective positions.
Label the trends for atomic size, ionization energy, and electron affinity:
Atomic size generally decreases from left to right across a period and increases from top to bottom within a group. Ionization energy generally increases from left to right across a period and increases from bottom to top within a group. Electron affinity generally increases from left to right across a period and becomes less negative from top to bottom within a group. You can label these trends on your periodic table as well.
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