Is this a correct diagram for a Lewis dot structure of Fluorine?
No, because a Lewis dot structure should only include the valence electrons.
Yes, because it correctly shows 7 electrons on the outer ring.
Yes, because it correctly shows 9 electrons.
No, because it is showing an ion of fluorine, not an atom.
Answers
Yes, is a correct diagram for a Lewis dot structure of Fluorine because it correctly shows 9 electrons.
What is Lewis dot structure?
The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms.The group 17 element fluorine has a total of nine electrons in the following configuration: 1s2 2s2 2p5. Fluorine's outermost shell has seven electrons. In the 2s and 2p electronic shells, respectively, there are two and five electrons. whose fluorine lewis dot structure depicts as dots.
In the Lewis structure, the letter Fluorine (F) is written inside a bracket, surrounded by seven dots that stand in for the valence electrons.
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Related Questions
How is the polarity of a bond different from the polarity of a molecule?
Answers
Answer:
A polar bond is one where the charge distribution between the two atoms in the bond is unequal. A polar molecule is one where the charge distribution around the molecule is not symmetric. It results from having polar bonds and also a molecular structure where the bond polarities do not cancel.
Explanation:
Write the correct formula for each compound named below. Show the from which it is formed.
Answers
Answer:
Explanation:
Sodium Chloride = Na⁺ + Cl⁻ = NaCl
Lithium bromide = Li⁺ + Br⁻ = LiBr
Magnesium fluoride = Mg ⁺² + F⁻ = Mg₂F.
Potassium Oxide = K⁺ + O⁻² = K₂O
Calcium sulphide = Ca⁺² + S⁻² = CaS
Aluminum Iodide = Al⁺³ + I⁻ = Al I₃
Barium bromide = Ba⁺² + Br⁻ = BaBr₂
Aluminum sulphide = Al⁺³ + S⁻ = Al₂S₃
Calcium Phosphide = Ca⁺² + P⁻³ = Ca₃P₂
Lithium Nitride = Li⁺ + N⁻³ = Li₃N
Magnesium Oxide = Mg⁺² + O⁻² = MgO
Aluminum Fluoride = Al⁺³ + F⁻ = AlF₃
Lithium Oxide = Li⁺ + O⁻² = Li₂O
Beryllium iodide = Be⁺² + I⁻ = BeI₂
identify the observations that indicate an added solute is insoluble in water.
Answers
Answer:
precipitation occur
Explanation:
the solute do not dissolve in water
You are given three seismograms that recorded the same earthquake. The P and S wave arrival times are as follows:
Seismogram 1: P = 2:15pm; S = 2:18pm
Seismogram 2: P = 2:14pm; S = 2:15pm
Seismogram 3: P = 2:17pm; S = 2:21pm
Which of the following is true?
Seismogram 3 was closest to the earthquake’s epicenter.
Seismogram 2 was closest to the earthquake’s epicenter.
Seismogram 1 was farthest from the earthquake’s epicenter.
No answer text provided.
Answers
Seismogram 2 was closest to the earthquake's epicenter. The time interval between P and S waves provides an estimate of the distance from the seismograph station to the earthquake epicenter.
Smaller time intervals indicate closer proximity. In this case, Seismogram 2 has the smallest time interval of 1 minute (P = 2:14pm, S = 2:15pm), suggesting it is closer to the epicenter compared to the other seismograms. Seismogram 1 has a time interval of 3 minutes (P = 2:15pm, S = 2:18pm), indicating it is farther from the epicenter. Seismogram 3 has a time interval of 4 minutes (P = 2:17pm, S = 2:21pm), suggesting it is farther from the epicenter compared to Seismogram 2.
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The public is not yet able to purchase cars powered by hydrogen fuel cells because engineers have to determine how the cars perform based on which scenario? on racetracks in real-world conditions in flooded environments on closed courses
A(on racetracks
B(in real-world conditions
C(in flooded environments
D(on closed courses
Answers
Answer:
It’s B just did it
Explanation:
Answer:
B.
Explanation: i just tookthe quiz ya welcome.
Consider the following potential for two inert gas (Xe) atoms at separation R : U=λe −R/rho
− R 6
A
(a) Calculate the potential energy of the two atoms at equilibrium separation R 0
. Express your answer in terms of an exponential function of (R 0
/rho). (The answer should be in the form: U= (factor) e −R 0
/rho
, and the factor should be determined. (b) If the equilibrium separation R 0
=12rho, find the equilibrium potential energy of the two atoms in terms of λ. (c) Now consider a Xe crystal with N atoms and only nearest neighbor interactions. Find the total interaction energy in units of eV/ atom assuming λ=4156eV and R 0
/rho=12
Answers
The total interaction energy in units of eV/atom assuming λ = 4156 eV and R_0/rho = 12 is 150N eV/atom.
Given Potential for two inert gas (Xe) atoms at separation R :
U=λe^(-R/rho)-R^6/a^6
a) To calculate the potential energy of the two atoms at equilibrium separation R_0,
we have to put dU/dR = 0λ e^(-R_0/rho) = (6R_0^6)/(a^6)λ e^(-R_0/rho) = (6(12rho)^6)/(a^6)
Therefore, λ = (6(12rho)^6)/(a^6) * e^(12)
The potential energy can be expressed as, U=λe^(-R_0/rho) = ((6(12rho)^6)/(a^6)) * e^(12) * e^(-12rho/rho)= ((6*12^6)/a^6) * e^(-11rho)
b) Given R_0 = 12rho, λ = (6(12rho)^6)/(a^6) * e^(12)
Therefore, λ = (6(12rho)^6)/(a^6) * e^(12) = (6 * 12^6)/(a^6) * e^(12) * e^(-12) = (6 * 12^6)/(a^6)
Potential energy U = λe^(-R_0/rho) = (6 * 12^6)/(a^6) * e^(-11rho)c)
The total interaction energy in units of eV/ atom assuming λ = 4156 eV and R_0/rho = 12
Therefore, λ = (6(12rho)^6)/(a^6) * e^(12) = (6 * 12^6)/(a^6) * e^(12) * e^(-12) = (6 * 12^6)/(a^6)
Total energy (U) = (N/2)U = (N/2)λe^(-R_0/rho) = (N/2)(6 * 12^6)/(a^6) * e^(-11rho) = 150N eV/atom.
Therefore, the total interaction energy in units of eV/atom assuming λ = 4156 eV and R_0/rho = 12 is 150N eV/atom.
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All of the following are nutrients EXCEPT:
a. fats
b. water
c. protein
d. blood
HURRY UP AND HELP ME
Answers
Answer:
\(d.blood\)
Explanation:
Hope it helps!!!
Hope this answer helps
what is saturated solution?12
Answers
Answer:
A solution in which the maximum amount of solvent has been dissolved
Explanation:
For example, 36g of salt in 100g of water.
what the correct answer
Answers
Answer:
halogens
hope its right
Answer:
there combine with an acid called sodium chloride or magnesium sulphate
what is the solution to the equation below rounded to the correct number of significant figures? 4700 L - 281.4 = _____ L
Answers
Answer:4400
I went over this problem multiple times and I finally found the soultion
The concept of significant figures are mainly used by scientist and engineer to know the significance of digits in a measurement. Therefore, 4400L is the solution to the equation rounded to the correct number of significant figures.
What is significant figures?Significant figures are the figures that indicate the degree of accuracy of a value. It tells about the precision of a value. It gives an idea about the digits that are necessary to indicate the experimental value.
Rules for counting significant figures are:
Number between 1 to 9 is always significant
Zeroes after a number has got no significance
Zeroes before a number has got no significance
Zeroes between number has got significance
4700 L - 281.4 =4400L
Therefore, 4400L is the solution to the equation rounded to the correct number of significant figures.
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A screening system called the __________ test is used for detecting chemicals with carcinogenic potential.
Answers
what is the role identification of work performance
Answers
Explanation:
It is one of the most important factors that encourage workers to put forth great efforts and work more efficiently.
(2.5 pts) Predict the major products for the following reactions. 6. (1.5 pt) Provide reasonable mechanism for the reaction below. H3C CH3 H3C CH3 CH2 H3C CH3 CH3 H3C CH3 H3C CH3 CH3 H3C OH HCl H3C OH OH Ph
Answers
The major product for the given reaction is (2-methylbutan-2-ol). The given reaction is an example of dehydration of alcohol.
Here's the mechanism of the reaction:Step 1: Protonation of the alcohol: The lone pair of electrons on oxygen is protonated by HCl. A proton from HCl is transferred to oxygen to form an oxonium ion.Step 2: Removal of water: The C-O bond breaks down in the oxonium ion, giving an intermediate carbocation. The electrons on the neighboring oxygen atom are used to form a double bond with the carbon. The leaving group (water molecule) is lost during this process.
Step 3: Deprotonation: The carbocation formed is then deprotonated by the water molecule that is present in the solution. A water molecule acts as a base and takes up a proton from the carbocation to form 2-methylbut-2-ene.Step 4: Protonation and deprotonation: The formation of 2-methylbut-2-ene is favored because it is more stable than the carbocation intermediate formed in the reaction. However, the reaction is reversible, and if more water is added to the reaction mixture, the double bond is protonated by water to form 2-methylbutan-2-ol.
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HCI + Zn --> H2 + ZnCl2
(Zinc in hydrochloric acid)
single replacement
double replacement
synthesis
decomposition
Answers
Answer:
Single replacement
Explanation:
Zn replaces the halogen (Cl) from HCl
It is a single replacement reaction
Peer-reviewed papers are considered trustworthy because they
A.Have more than one author incorrect answer
B.Prove their hypotheses incorrect answer
C.Have been checked by other scientists
D.are published frequently
Answers
3. The layer closest to the Earth where all and _________ most of the air molecules exist is the troposphere.
A. insolation
B. weather
C. air
D. conduction
E. ozone
F. ecological
G. atmosphere
H. sun
I. convection
J. tilts
Answers
Answer:
G
Explanation:
The atmosphere is divided into five different layers, based on temperature. The layer closest to Earth's surface is the troposphere, reaching from about seven and 15 kilometers (five to 10 miles) from the surface. The troposphere is thickest at the equator, and much thinner at the North and South Poles.
answer is G Atmosphere
Bleach boils at 101°C. Isopropyl alcohol (rubbing alcohol) boils at 82.5°C. Vinegar boils at 100.6°C. Water boils at 100°C. A student has an unknown clear liquid. She wants to determine what it is, so she decides to boil the liquid and use the boiling point as a means of identification. The liquid starts boiling at 99°C. Based on the boiling points shown, which substance is it?
Answers
Answer:
most likely water
Explanation:
most likely it is water, however pressure plays a role, if you are at sea level the boiling point of water is 100°C but if you are on Mt. Everest it is 71°C, assuming she is slightly above sea level it is water.
measuring the isotopic composition of atmospheric co2 shows that the burning of fossil fuels has led to _____ co2 levels over the last 200 years.
Answers
Answer:
measuring the isotopic composition of atmospheric co2 shows that the burning of fossil fuels has led to the co2 levels over the last 200 years.
Explanation:
pa brainliest po ty
Use the word stable to explain why the alkali metals tend to lose 1 valence electron.
Answers
Answer:
becoz vvv is always with you
Answer:
Alkali metals have one valence electron on their outer shell. They are more stable when they have eight valence electrons so they tend to loose that one electron and obtain a full octet, therefore become stable
What is the molecular weight of the product of the reaction between anthracene and maleic anhydride given that diels-alder reactions have 100% atom economy? answer with just the number for the mass to two decimal places in g/mol.
Answers
276.44 is the molecular weight of the product of the reaction between anthracene and maleic anhydride given that Diels-alder reactions have 100% atom economy.
What occurs in the Diels-Alder reaction between maleic anhydride and anthracene?In this assignment, you will learn how to create a bridging polycyclic anhydride using the Diels-Alder method. Maleic anhydride and anthracene are two compounds that will dissolve in xylene and reflux. Utilizing vacuum filtering, the product 9,10-dihydroanthracene-9,10-succinic anhydride will be recovered and separated.
What is the name of the anthracene and maleic anhydride reaction?Anthracene and maleic anhydride in the Diels-Alder process.
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which statments are true about balancing chemical reactions?
select all that apply.
a. balancing reactions should not involve trail and error
b. single atoms should be done last
c. at the end, the coefficients should be the biggest numbers possible
d. atoms that are in only one of the reactions and only one of the products should be done first.
Answers
If 5.9 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, how many liters of CO₂ is produced? (The density of CO₂ is 1.98 kg/m³ and 1 L = 1 dm³).
Answers
Answer:
2.18 × 10³L
Explanation:
2178 litres of CO2 is produced in the combustion reaction.
HOW TO CALCULATE VOLUME
The volume of a substance can be calculated using the formula below:Density = mass ÷ volume
Firstly, we must calculate the number of moles present in 5.9 × 10²⁵ molecules by dividing by Avogadro number:no of moles. = 5.9 × 10²⁵ ÷ 6.02 × 10²³
no. of moles = 5.9/6.02 × 10²
no. of moles = 0.98 × 10²moles
= 98moles
Moles = mass ÷ molar mass
Mass of CO2 = moles × molar mass
Molar mass of CO2 = 12 + 16(2) = 44g/mol
Mass of CO2 = 98 × 44
Mass of CO2 = 4312g = 4.312kg
The volume of CO2 can be calculated as follows:Volume = 4.312kg ÷ 1.98kg/m³
Volume = 2.178m³
Since 1m³ = 1000L
2.178m³ = 2.178 × 1000
= 2178 liters.
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Solve the questions shown
Answers
The number of electrons, protons, and neutrons in argon is 18, 18 , and 22 respectively, the number of electrons , protons and neutrons in sulphur-32 is 16, 16, 16 respectively. The number of protons, neutrons, and electrons are 6 , 8 and 6. And for uranium-238 , 92 protons , 92 electrons and 146 neutrons.
What is proton, neutron, and electron and argon, sulphur, and uranium consist how many electrons, neutrons and protons?Electrons are the one revolving around the nucleus in shells K,L,M and N which have attraction to the nucleus.For uranium which is a radioactive element have two isotopes namely uranium-238 and uranium-235.The number of electrons , protons and neutrons in argon which is a noble gas element have 18, 18 and 22 respectively.The number of electrons, protons and neutrons in sulphur are 16, 16 and 16 respectively.The number of electrons, protons and neutrons in argon is 18,18 and 18 .To know more about electrons visit:
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In one to two sentences, describe an experiment that would show that intramolecular forces (attractions between atoms within molecules) are stronger than intermolecular forces (attractions between molecules)
Answers
In order to demonstrate that intramolecular forces are stronger than intermolecular forces, a block of ice will be heated in a sealed container until it turns into steam.
Why do intramolecular forces outweigh intermolecular forces?
Because the forces holding together compounds are stronger than the forces holding together molecules, intramolecular forces are stronger than intermolecular forces.
Intermolecular forces exist between molecules, but intramolecular forces exist between atoms within a molecule. This is the primary distinction between intermolecular and intramolecular forces.
Look for the molecule with the most polarity, the most electronegative atoms, or the most hydrogen bonding groups if the molecules have identical molar weights and similar intermolecular forces. That one will have the overall stronger IMFs.
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What happens when there is an increase in temperature for a reaction rate? Select all that apply.
Answers
ANSWER
option A and B
EXPLANATION
An increase in temperature will increase the average kinetic energy of the molecule, thereby increasing the frequency of collision.
The correct answer are option A and B
Which element has the greatest average atomic mass? A. iodine B. bromine C. tellurium D. krypton
Answers
Consider the following reaction: 2NO2(g) ⟶ N2O4(g) Part A Using the following data, calculate ΔG∘ at 298 K. ΔG∘(NO2(g)) = 51.84 kJ/mol , ΔG∘(N2O4(g)) = 98.28 kJ/mol . Express the free energy in kilojoules to two decimal places. ΔG∘ Δ G∘ = kJPart B Calculate ΔG at 298 K if the partial pressures of NO2 and N2O4 are 0.37 atm and 1.63 atm , respectively. Express the free energy in kilojoules to two decimal places. ΔG Δ G = kJ
Answers
Gibbs's free energy is -4.40 kJ. The reaction quotient can be calculated as Q = (P(N2O4)) / (P(NO2))^2, where P(N2O4) and P(NO2) are the partial pressures of N2O4 and NO2, respectively.
Part A:
The ΔG∘ for the reaction at 298 K can be calculated by subtracting the standard free energy of formation of the reactants from the standard free energy of formation of the product: ΔG∘ = ΔG∘(N2O4) - 2ΔG∘(NO2). Plugging in the given values, we have: ΔG∘ = 98.28 kJ/mol - 2(51.84 kJ/mol) = -4.40 kJ.
Part B:
To calculate ΔG at 298 K using partial pressures, we can use the equation: ΔG = ΔG∘ + RT ln(Q), where Q is the reaction quotient. The reaction quotient can be calculated as Q = (P(N2O4)) / (P(NO2))^2, where P(N2O4) and P(NO2) are the partial pressures of N2O4 and NO2, respectively. Plugging in the given partial pressures and substituting the values into the equation, we can calculate ΔG.
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Chất nào sau đây là chất điện li mạnh trong H2O
Answers
Answer:
những lựa chọn ở đâu?
Explanation:
Hy vọng nó sẽ giúp ích;>
Question 7
Review
The solubility of KCl(s) in water depends on the
a
pressure on the solution
b.
rate of stirring
size of the KCl sample
d
temperature of the water
Submit Answer
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Answers
Use your knowledge of bonding and mechanisms to explain why:a. Alkenes are more reactive than alkanes
Answers
Alkenes are hydrocarbons that contain a double carbon bond, whereas alkanes are hydrocarbons that only have single carbon-carbon bonds.
The reason why alkenes are more reactive than alkanes is that the double bond has a very high electron density in comprarison to the single bond of the alkanes. This double bond is made up of one very strong σ bond and a weak π bond.
So generally alkenes react breaking the π bond.