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chemistry - ionization energy(check + help)

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chemistry (Bohr model)
The second ionization energy of He is almost exactly four times the ionization energy of H, and the third ionization energy of Li is almost exactly nine times the ionization energy of H: IE (MJ mol-1) H(g) --> H +(g) + e- (1.3120) He+(g) --> He2+(g) + e- (5.2504) Li2+(g...

chemistry final-urgent
Choose the element with the highest ionization energy element: Na, Mg, Al, P, S In my book: ionization energy increase from left to right and bottom to top. Na<Mg<Al<P<S S is highest ionization energy? my instructor review this problem and his answer is P is a ...

chemistry
What is the difference between the ionization energy of inner-shell electrons and the ionization energy of outer-shell electrons? A. The ionization energy of inner-shell electrons is less than the ionization energy of outer-shell electrons. B. They are equal to each other. C. ...

chemistry - ionization energy(check + help)
I need help understanding by boron does not follow the ionization trend across the period is lower than the first two elements in the same period, where as it should be higher. has it got to do with the p block having an electron, which makes it easier to remove the electron ...

Chemistry
Suppose that a PES experiment is performed in which mercury vapor is irradiated with ultraviolet light of wavelength 58.4 nm. Energy of a photon of this light is 21.2 eV. Write an equation that shows the process corresponding to the first ionization energy of Hg. the kinetic ...

Chemistry
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=infinity. I don't know how to solve this problem. A. -2.18 x ...

Chem
Which group shows the correct order of first ionization energy? Ca > Na > K Al > Si > P K > Ca > Ge Na > P > Cl Cs < Rb < Na I know the closer the element is to the right side of the table, group 8, the higher the ionization level, and the lower ...

chemistry
i have no idea how ionization works, yet i have to do a worksheet on it! help! how does ionization, and how do you tell which element has a higher ionization energy in relation to another? PLZ ANSWER SOON! I NEED HELP!

Chem
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=infinity. I don't know how to solve this problem. A. -2.18 x ...

chemistry
does chlorine or carbon have greater ionization energy? I would expect it to be harder to pull an electron away from 17 + charges on chlorine than 6+ charges on carbon; although the outer electron is farther away in Cl. You can look these things up in a table; I did and Cl has...

Chemistry
why does inoinzation energy tend to decrease from top to bottom within a group? i'm not sure, but i think it has something to do with the size of the element The electrons involved in ionization, that is, the outermost electrons, are farther away from the nucleus, and are held...

chemistry
The first ionization energy of a hydrogen atom is 2.18 aJ. Assuming the ionization efficiency is 82%, how many such photons are needed to 1.00 * 10^16 atoms?

Chemistry - check answers
1) Which element has the largest first ionization energy? A) Rb, B) Fr, C) K, D) Na, E) Mg Answer: E 2) Which has the highest electronegativity? A) Na, B) Cs, C) Si, D) Te, E) Cl Answer: E 3) In which of the following are the bonds arranged in order of increasing polarity? A) ...

Chemistry
Calculate the ionization energy (in kj) for a mole of hydrogen atoms, making the assumption that ionization is the transition from n=1 the correct answer is : 1.31x10^3 kJ

Chemistry (Follow up post - Dr.BOB22)
Ionization is when an electron is removed from an atom and ionization energy is the energy required to do this. "Electrons stream from the negative electrode to the positive electrode. In the process of moving from one electrode to the other they knock electrons in the ...

CHEMISTRY (ionization energy)
find the ionization energy of I-, I, and I+ I know you have to use E= hc/lambda, and c=lambda x v, but how do i get v?

Chemistry
1)Identify which concepts/topics you believe that you will need to apply to solve the problem below. Select all that apply. a)Covalent Bond Energy b)Ionic Bond Energy c)Single-electron Atom Ionization Energy d)Multi-electron Atom Ionization Energy e)Electronegativity f)...

chemistry
Why do you think that the ionization energy tends to decrease within a family of the periodic table? Since ionization energy tends to increase within a period of the periodic table because they are in higher energy orbitals so it'll take more energy to remove the electrons. It...

Chemistry
Which trends are observed when the elements in Period 3 on the Periodic Table are considered in order of increasing atomic number? (1) The atomic radius decreases, and the first ionization energy generally increases. (2) The atomic radius decreases, and the first ionization ...

chem
order the elements Mg, K, Ca, S according to second ionization energy I know that K would have the highest second ionization energy, then come S bec it takes more energy to remove an electron from a nonmetal than a metal, which is next ?

chemistry
The following reaction can be written as the sum of two reactions, one of which relates to ionization energy and one of which relates to electron affinity: Li(g)+F(g)→Li+(g)+F−(g) What is the reaction that corresponds to the first ionization energy of lithium, Li? ...

Chemistry
Calculate the work done when 70.0g of tin dissolves in excess acid at 3.00 atm and -15.0 C. Sn(s)+2H^+(aq) -> Sn^2+(aq)+H2(g) Assume ideal gas behavior. Any ideas? I've come up with a few different answers and can't come to a conclusion. I see the following energies ...

chem
the ionization energy for atomic hydrogen is 1.31x10^6 J/mol. what is the ionization energy for He^+

Chemistry
Which of the following has the higher ionization energy and why: Li or Ba? I cannot figure this out because they are in different periods but Ba is down on the periodic table telling me that it may have a higher ionization than Li. Help please?

chemistry
For a week acid whose ionization constant is 1.75 x 10(-5), the pH of its solution is 3.0. Determine its degree of ionization and its percent ionization.

Chemistry
1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?? [ i got the answer 5.94 x 10^2 m/Sec is that right] 2.) A gas is allowed to expand from 1.5 : to 12.5 L against a constant pressure of 6.5 ...

chemestry
write a chemical equation for an atom losing a third electron. would the ionization energy for this reaction be larger or smaller that the ionization energy for the lloss of the first or second electron? explain

chemistry
Can someone help me to check my answer and the way I solve this problem is right or wrong? Determine the energy required to turn a Na metal atom into a gas phase ion (Na+ (g)). Ionization energy of Na(g) 499 kJ/mol Electron affinity of O(g)for2e- 603 kJ/mol Energy to vaporize ...

physics
For a hydrogen atom, determine the ratio of the ionization energy for the n = 3 excited state to the ionization energy for the ground state.

AP Chemistry Born-Haber Cycle?
When using the Born-Haber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in Na2S? Also, the problem asked me to find the change in energy for S- (g) + e- => S2- (g). Assuming that you do double the ionization energy, I ...

science, chemestry
Identify which concepts/topics you believe that you will need to apply to solve the problem below. Select all that apply. Covalent Bond Energy Ionic Bond Energy Single-electron Atom Ionization Energy Multi-electron Atom Ionization Energy Electronegativity Limiting Reagent ...

Chemistry - College
The ionization energy of a certain element is 472 kJ/mol. However, when the atoms of this element are in the first excited state, the ionization energy is only 166 kJ/mol. Based on this information, calculate the wavelength of light emitted in a transition from the first ...

Chemistry
how does the outer energy level relate to the ionization energy?

Chemistry
Which value represents the first ionization energy of a nonmetal? 497.9kJ, 577.4kJ, 811.7kJ, or 1000.kJ ? I think the answer is 1000. kJ, since it is the highest amount. Am I correct? My reasoning is that nonmetals have higher ionization energies than metals.

chemistry
When irradiated with a radiation of wavelength 58.4 nm the electron of H atom was ejected with kinetic energy 7.6 eV. Calculate the ionization energy.

chemistry
how do you write the ionization reaction and the acid ionization constant expression for the third ionization of phosphoric acid in water? Can you explain the main concepts that are involved in this?

chemistry
calculate the lattice energy of sodium oxide (Na2O) from the following data: Ionization energy of Na(g): 495 kJ/mol Electron affinity of O2 for 2e: 603 kJ/mol Energy to vaporize Na(s): 109 kJ/mol O2(g) bond energy: 499 kJ/mol Energy change for the reaction 2Na(s)+ 1/2 O2(g)--&...

CHEMISTRY
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the connection ...

CHEMISTRY
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the connection ...

Chemistry
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told to look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the connection between...

Chemistry
What amount of energy is required to completely ionize 21.5 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

Chemistry
How much energy, in joules, must be absorbed to convert to Na+ all the atoms present in 1.00mg of gaseous Na? The first ionization energy of Na is 495.8 kJ/mol

Chemistry
Calulate the degree of ionization for NH3(aq) in 1.0 M solution, Kb = 3.236E-4. I've seen degree ionization for acids and not bases. Do I need to find the Ka [H+] value of the base to determine the degree of ionization?

Chemistry
1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation? A) A positive charge...

Chemistry
1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation? A) A positive charge...

science
The bonds that holds atoms together in a molecule are a form of a. potential energy b. ionization energy c. kinetic energy d. thermal energy A?

chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...

chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...

ap chemistry
What amount of energy is required to com- pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

chemistry
What is the maximum number of Cs+ ions that can be produced per joule of energy absorbed by a sample of gaseous Cs atoms? Do you start by knowing the ionization energy for Cs. I really need assistance.

Chemistry
Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the energy (Joules) ...

Chemistry
Highest ionization energy to lowest I be ci f

Chemistry
Highest ionization energy to lowest I be ci f

physical science
The ionization energies of Li, Na, K, Rb, and Cs are respectively 5.4, 5.1, 4.3, 4.2, and 3.9 eV. All are in Group 1 of the periodic table. Explain the decrease in ionization energy with increasing atomic number in this group.

Chemistry
i don't understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...

Chemistry
I don't understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...

chemistry
the following values are the only energy levels of a hypothetical one electron atom: E6= -2x10^-19J, E4= -11x10^-19J, E2= -17x10^-19J, E5= -7x10^-19L, E3= -15x10^-19J, E1= -20x10^-1J a: if the electon were in the n = 3 level, what would be the highest frequency and minimum ...

chemistry
Can someone help me with this homework problem? Which of the following is the best explanation as to why lithium is the strongest reducing agent in the alkali metals? A) relatively high charge density of Li B) lowest ionization energy of the metals C) most positive standard ...

Chemistry
Which of the following elements has the smallest ionization energy? A. F B. Be C. B D. Mg E. C

Chemistry
what are electronegativity, electron affinity, and ionization energy?

Chemistry
Why is ionization energy for calcium greater than that for potassium?

chemistry
q4 What element has the greatest first ionization energy? Li Na K Rb Cs

chemistry
For the elements in row 2 of the PT discover the relationship between ionization and the family number of the element Element. Family. Ionization Ener Lithium. 1 13.6 beryllium. 2. 9.3 boron. 13. 8.3 carbon. 1 4. 11.27 nitrogen. 15 14.53 oxygen. 16. 13.62 fluorine. 17. 17.42 ...

chemistry
Do nonmetals have a higher or lower ionization energy?

chemistry
what is the difference between electron affinity and ionization energy?

Chemistry
Rank Na, Mg and K in order of increasing 2nd ionization energy a. Na < K < Mg b. Mg < K < Na c. K < Na < Mg d. K < Mg < Na e. Mg < Na < K

Chemistry
What is the ionization energy (in kJ/mole) of the hydrogen-like ion F8+ ?

chemistry
fisrt ionization energy across period three

Chemistry
Among the following, which element has the lowest ionization energy? A. Na B. Cl C. Cs D. I

chemistry
explain fisrt ionization energy across period three

Chemistry
List Sn , Sn2+, Sn4+ in order of decreasing ionization energy

chemistry
Explain the first ionization energy of lithium is greater than that of sodium

chemistry
what is the ionization reaction and acid ionization constant expression for the HS- ion in water?

Chemistry
What is the lattice energy of NaH? Use the given information below: Heat of formation for NaH = -56.442 kJ/mol Head of sublimation for Na = 107.3 kJ/mol Ionization energy for Na = 496.00 kJ/mol Bond dissociation energy for H2 = 435.9kJ/mol Electron affinity of H = -72.8

Chemistry
What is the lattice energy of NaH? Use the given information below: Heat of formation for NaH = -56.442 kJ/mol Head of sublimation for Na = 107.3 kJ/mol Ionization energy for Na = 496.00 kJ/mol Bond dissociation energy for H2 = 435.9kJ/mol Electron affinity of H = -72.8

Chemistry
Explain which atom of the following pair have the smaller ionization energy: As, I

chemistry
will KCl conduct more electricity than AlCl3 because K has less ionization energy than Al?

Chemistry
Rank the following in terms of increasing first ionization energy. 1. Na, Mg, N, O, F 2. F, N, O, Mg, N 3. F, O, N, Mg, Na 4. O, N, F, Na, Mg 5. Na, Mg, O, N, F

Chemistry
Calculate the fourth ionization energy of beryllium in J atom^-1 & kJ mol^-1 units

Chemistry
Which of the following atoms would have the highest first ionization energy? A. Li B. Be C. Na D. Mg

Chemistry
What's the relationship between ionization energy and electron affinity? I ionization eneergy deals with losing electrons and electron affinity deals with gaining electrons, but I don't know how to explain the relationship.

Chemistry
Do you expect CaCl(s) to be stable if the 1st ionization energy of Calcium is approx. 590 kj/mol, the Lattice Energy is approx 700 kj/mol and the total change in enthalpy is -36? Why?

Chemistry
How can I calculate the energy required for the ionization of an electron from the ground state of the hydrogen atom?

Chemistry
Predict which member of each pair has higher ionization energy? A) Al3 or Al+ B)Ca or Sr C)F or Ne ,explain please help me i don't know how to do this.

chemistry
Calculate the energy required for ionization of electron from the ground state of hydrogen atom

chemistry
Calculate the energy required for ionization of electron from the ground state of hydrogen atom

Chemistry
Shown below are several options for the box notations of the ground state electron configuration of the following gas-phase species. Identify the correct electronic configuration. i. Al2− ii. Mn (a)Select the reason that best explains why the first ionization energy ...

Chemistry
Why is the first ionization energy of a nonmetal much higher than that of an alkali metal in its same period?

science
The first ionization energy of Boron is 799, give an equation illustrating first ionization with Boron

Chemistry - Periodic Table+IE(check+help)
The following data lists the ionization energies for a given atom: IE1 = 738Kj/mol; IE2 = 1451Kj/mol; IE3 = 7733Kj/mol. Predict the valence electron configuration for this atom, and explain your reasoning. i do not understand this question but i will give it a try, please ...

Chemistry - Periodic Table+IE(check+help)
The following data lists the ionization energies for a given atom: IE1 = 738Kj/mol; IE2 = 1451Kj/mol; IE3 = 7733Kj/mol. Predict the valence electron configuration for this atom, and explain your reasoning. i do not understand this question but i will give it a try, please ...

chem 115
The first ionization energy is the energy necessary to completely remove the outermost electron from an atom. For a Hydrogen atom this energy is 2.18 X 10^-18J. If you were to use a laser to provide this energy, what is the wavelength (in nm) of the light emitted from the laser?

chemistry
each element Na, Mg, Al, Si, P, S has a very big jump in ionization energies. Please explain what causes these jumps in energy?

Chemistry
Write a chemical equation representing the second ionization energy for lithium. use e- as the symbol for an electron.

chemistry
Experimentally the ionization energy of hydrogen is 1312.2 kJ / mol. What would be the wavelength (nm) of a photon with enough energy to ionize one atom of hydrogen? They give the equation E=hcR but those are all known constant values and none include mols so I'm very confused...

Chemistry ? please
I was out sick & am copying a friends notes from class. My question is what does e- stand for? it easier to form a positive ion with a low ionization energy because a positive ion is formed by removing an e-(I think maybe electron) and the other one is e-s? The trend in ...

Chemistry
What will happen if a small amount of hydrochloric acid is added to a 0.1 M solution of HF? A) The percent ionization of HF will increase. B) The percent ionization of HF will decrease. C) The percent ionization of HF will remain unchanged. D) Ka for HF will increase. E) Ka ...

chemistry
The enthalpy of formation of MX is ΔHf° = –493 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 143 kJ/mol. The ionization energy of M is IE = 437 kJ/mol. The electron affinity of X is ΔHEA = –317 kJ/mol. (Refer to the hint). The bond energy of X2 is BE...

chemistry correction
1. Which two elements react vigorously with each other? A: Chlorine and lithium B:Chlorine and potassium C:iodine and lithium D:iodine and potassium my answer is B 2. which statement about electronegativty is correct. A: Electronegativity decrease across a period. B:...

Chemistry
Pyridine, a substance used as a catalyst in some synthetic reactions is a very weak base its degree of ionization is equal to 0.03% in solution 0.02 mol L -¹. Determine the ionization constant.

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