Question 1

Which Nobel gas has a full 4f shell of electrons?

Accepted Answer

A)  Ne 
B)  Ar 
C)  Kr 
D)  Xe 
E)  Rn 
A)  Ne 
B)  Ar 
C)  Kr 
D)  Xe 
E)  Rn E

Question 2

The 2p level in fluorine has a binding energy of -12 eV. If a photoelectron spectrum of fluorine is taken with ultraviolet light with an energy of 21.2 eV, at what kinetic energy will the 2p electrons be observed?

Accepted Answer

A)  3.0 eV 
B)  9.2 eV 
C)  16.6 eV 
D)  27.2 eV 
E)  33.2 eV 
A)  3.0 eV 
B)  9.2 eV 
C)  16.6 eV 
D)  27.2 eV 
E)  33.2 eV B

Question 3

How many possible sets of quantum numbers (n, l, m, ms) are there with n=4?

Accepted Answer

A)  1 
B)  4 
C)  8 
D)  16 
E)  32 
A)  1 
B)  4 
C)  8 
D)  16 
E)  32 E

Question 4

Which is the best estimate for Zeff(1s) for the Hartree orbitals for He?

Accepted Answer

A)  1.0 
B)  1.7 
C)  2.0 
D)  2.3 
E)  3 
A)  1.0 
B)  1.7 
C)  2.0 
D)  2.3 
E)  3

Question 5

What +2 ion has the electronic configuration [Xe]6s24f145d10?

Accepted Answer

A)  Ba2+ 
B)  Po2+ 
C)  Pt2+ 
D)  Pb2+ 
E)  Hg2+ 
A)  Ba2+ 
B)  Po2+ 
C)  Pt2+ 
D)  Pb2+ 
E)  Hg2+

Question 6

What is the electronic configuration of Sn?

Accepted Answer

A)  [Kr]4s24d104p2 
B)  [Kr]5s25d105p2 
C)  [Kr]5s24d105p2 
D)  [Kr]4s25d104p2 
E)  [Kr]5s24d12 
A)  [Kr]4s24d104p2 
B)  [Kr]5s25d105p2 
C)  [Kr]5s24d105p2 
D)  [Kr]4s25d104p2 
E)  [Kr]5s24d12

Question 7

The electron affinity for sodium is 52 kJ mol-1 and the first ionization energy for sodium is 496 kJ mol-1. What is the change in energy for the following reaction?
2 Na(g) → Na+(g) + Na-(g)

Accepted Answer

A)  -548 kJ mol-1 
B)  -496 kJ mol-1 
C)  -52 kJ mol-1 
D)  +444 kJ mol-1 
E)  +888 kJ mol-1 
A)  -548 kJ mol-1 
B)  -496 kJ mol-1 
C)  -52 kJ mol-1 
D)  +444 kJ mol-1 
E)  +888 kJ mol-1

Question 8

Which of the following would you expect to have the largest third ionization energy?

Accepted Answer

A)  Mg 
B)  Si 
C)  Al 
D)  Ne 
E)  Ti 
A)  Mg 
B)  Si 
C)  Al 
D)  Ne 
E)  Ti

Question 9

Which will have the largest electron affinity?

Accepted Answer

A)  O 
B)  O- 
C)  O2- 
D)  O+ 
E)  Ne 
A)  O 
B)  O- 
C)  O2- 
D)  O+ 
E)  Ne

Question 10

Which of the follow are possible quantum numbers for a 3d wave function in a hydrogen atom?

Accepted Answer

A)  n=2 l=3 m=3 
B)  n=3 l=0 m=0 
C)  n=3 l=3 m= -2 
D)  n=3 l=2 m= -1 
E)  none of the above 
A)  n=2 l=3 m=3 
B)  n=3 l=0 m=0 
C)  n=3 l=3 m= -2 
D)  n=3 l=2 m= -1 
E)  none of the above

Question 11

Which of the following sets of quantum numbers is allowed for an electron in a one electron atom?

Accepted Answer

A)  n=4, l=3, m=3, ms=0 
B)  n=3, l=1, m=2, ms= -1/2 
C)  n=2, l=0, m=1, ms=1/2 
D)  n=2, l=3, m=3, ms=1/2 
E)  n=6, l=5, m= -3, ms= -1/2 
A)  n=4, l=3, m=3, ms=0 
B)  n=3, l=1, m=2, ms= -1/2 
C)  n=2, l=0, m=1, ms=1/2 
D)  n=2, l=3, m=3, ms=1/2 
E)  n=6, l=5, m= -3, ms= -1/2

Question 12

The photoelectron spectra of Pd shows the 3d electrons to have an energy of -335 eV. Estimate the Zeff for this orbital in Pd.

Accepted Answer

A)  14.9 
B)  22.2 
C)  44.7 
D)  46 
E)  54.9 
A)  14.9 
B)  22.2 
C)  44.7 
D)  46 
E)  54.9

Question 13

Which will have the largest ionization potential?

Accepted Answer

A)  Li 
B)  Li+ 
C)  He 
D)  K 
E)  Cs 
A)  Li 
B)  Li+ 
C)  He 
D)  K 
E)  Cs

Question 14

Which will be larger the first ionization energy of Ar or the second ionization energy of K?

Accepted Answer

A)  E1 of Ar 
B)  E2 of K 
C)  they will be exactly equal 
D)  it depends on the shielding 
A)  E1 of Ar 
B)  E2 of K 
C)  they will be exactly equal 
D)  it depends on the shielding

Question 15

Rank from smallest to largest in terms of atom/ionic radii.

Accepted Answer

A)  S2-, Cl-, Ar, K+, Ca2+ 
B)  Ca2+, K+, Ar, Cl-, S2- 
C)  Ca2+, S2-, K+, Cl-, Ar 
D)  Ar, K+, Cl-, Ca2+, S2- 
E)  Ar, Cl-, K+, S2-, Ca2+ 
A)  S2-, Cl-, Ar, K+, Ca2+ 
B)  Ca2+, K+, Ar, Cl-, S2- 
C)  Ca2+, S2-, K+, Cl-, Ar 
D)  Ar, K+, Cl-, Ca2+, S2- 
E)  Ar, Cl-, K+, S2-, Ca2+

Question 16

The ground state 1s electron in which atom has an average distance closest to the nucleus?

Accepted Answer

A)  H 
B)  He+ 
C)  He 
D)  a & b are the same and closest 
E)  c & d are the same and closest 
A)  H 
B)  He+ 
C)  He 
D)  a & b are the same and closest 
E)  c & d are the same and closest

Question 17

Which atomic species, in its ground state, has six unpaired electrons?

Accepted Answer

A)  Fe 
B)  O 
C)  Mo 
D)  Cs 
E)  Dy 
A)  Fe 
B)  O 
C)  Mo 
D)  Cs 
E)  Dy

Question 18

The most probable distance for an electron in a 1s wavefuction in hydrogen is at a distance equal to ao/Z. Given this information you would predict that Li2+ would be

Accepted Answer

A)  2 times larger than hydrogen 
B)  2 times smaller than hydrogen 
C)  3 times larger than hydrogen 
D)  3 times smaller than hydrogen 
E)  no way to guess exactly due to shielding effects 
A)  2 times larger than hydrogen 
B)  2 times smaller than hydrogen 
C)  3 times larger than hydrogen 
D)  3 times smaller than hydrogen 
E)  no way to guess exactly due to shielding effects

Question 19

In which of the following pairs does the second atom or ion has the larger radius?

Accepted Answer

A)  He, Li+ 
B)  F-, F 
C)  Br, Cl 
D)  Na, Mg 
E)  Na, Na+ 
A)  He, Li+ 
B)  F-, F 
C)  Br, Cl 
D)  Na, Mg 
E)  Na, Na+

Question 20

Which of the following is always true?

Accepted Answer

A)  IE1 increases with increasing atomic number 
B)  IE1 decreases with increasing atomic number 
C)  IE2 is always higher than IE1 
D)  for isoelectronic species the atom with the higher atomic number will have the lower IE1 
E)  none of the above are always true 
A)  IE1 increases with increasing atomic number 
B)  IE1 decreases with increasing atomic number 
C)  IE2 is always higher than IE1 
D)  for isoelectronic species the atom with the higher atomic number will have the lower IE1 
E)  none of the above are always true

Exam 5: Quantum Mechanics and Atomic Structure

Which Nobel gas has a full 4f shell of electrons?

The 2p level in fluorine has a binding energy of -12 eV. If a photoelectron spectrum of fluorine is taken with ultraviolet light with an energy of 21.2 eV, at what kinetic energy will the 2p electrons be observed?

How many possible sets of quantum numbers (n, l, m, ms) are there with n=4?

Which is the best estimate for Zeff(1s) for the Hartree orbitals for He?

What +2 ion has the electronic configuration [Xe]6s24f145d10?

What is the electronic configuration of Sn?

The electron affinity for sodium is 52 kJ mol-1 and the first ionization energy for sodium is 496 kJ mol-1. What is the change in energy for the following reaction? 2 Na(g) → Na+(g) + Na-(g)

Which of the following would you expect to have the largest third ionization energy?

Which will have the largest electron affinity?

Which of the follow are possible quantum numbers for a 3d wave function in a hydrogen atom?

Which of the following sets of quantum numbers is allowed for an electron in a one electron atom?

The photoelectron spectra of Pd shows the 3d electrons to have an energy of -335 eV. Estimate the Zeff for this orbital in Pd.

Which will have the largest ionization potential?

Which will be larger the first ionization energy of Ar or the second ionization energy of K?

Rank from smallest to largest in terms of atom/ionic radii.

The ground state 1s electron in which atom has an average distance closest to the nucleus?

Which atomic species, in its ground state, has six unpaired electrons?

The most probable distance for an electron in a 1s wavefuction in hydrogen is at a distance equal to ao/Z. Given this information you would predict that Li2+ would be

In which of the following pairs does the second atom or ion has the larger radius?

Which of the following is always true?

The Atom in Modern Chemistry

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Introduction to Quantum Mechanics

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Binding in Transition Metal Compounds and Coordination Complexes

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Filters

How many possible sets of quantum numbers (n, l, m, m_s) are there with n=4?

Which is the best estimate for Z_eff(1s) for the Hartree orbitals for He?

What +2 ion has the electronic configuration [Xe]6s²4f¹⁴5d¹⁰?

The electron affinity for sodium is 52 kJ mol^-¹ and the first ionization energy for sodium is 496 kJ mol^-¹. What is the change in energy for the following reaction? 2 Na(g) → Na⁺(g) + Na^-(g)

The photoelectron spectra of Pd shows the 3d electrons to have an energy of -335 eV. Estimate the Z_eff for this orbital in Pd.

The most probable distance for an electron in a 1s wavefuction in hydrogen is at a distance equal to a_o/Z. Given this information you would predict that Li²⁺would be