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Many-electron atoms:
periodicity
Copyright
D. Herrick |
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20 Questions from past exams.
Practice for speed. Aim
for 2 minutes per problem.
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| 1. |
Z
for the atom with the electron configuration 1s22s22p4
is |
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| A)
10 |
B)
8 |
C)
6 |
D)
12 |
E)
7 |
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| 2. |
The
number of electrons in the configuration 1s22s22p63s23p5
is |
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| A)
13 |
B)
12 |
C)
17 |
D)
15 |
E)
5 |
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| 3. |
How
many electrons can occupy orbitals in the 3p subshell? |
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| A)
6 |
B)
15 |
C)
12 |
D)
3 |
E)
18 |
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| 4. |
How
many electrons occupy f-orbitals in the ground state
configuration of the radon atom? |
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| A)
0 |
B)
14 |
C)
21 |
D)
28 |
E)
7 |
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| 5. |
The
correct order-of-fill for subshells in neutral atoms is
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| A) |
1s2s3s2p3p3d4d |
| B) |
1s2s2p3s3p3d4s4p4d |
| C) |
1s2s2p3s3d3p4s4d4p |
| D) |
1s2s2p3s3p4s3d4p |
| E) |
1s2s2p3s3p4s4p3d |
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| 6. |
The
number of parallel unpaired spins in N is |
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| 7. |
How
many electrons occupy p-orbitals in the ground state of
the tin atom? |
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| A)
8 |
B)
20 |
C)
2 |
D)
18 |
E)
50 |
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| 8. |
The
halogen atoms have valence configurations |
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| A)
ns1 |
B)
ns2np5 |
C)
ns2np3 |
D) ns2np2 |
E) ns2np6 |
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| 9. |
How
many electrons occupy s-orbitals in the ground state of
the cesium atom? |
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| A)
10 |
B)
13 |
C)
6 |
D)
11 |
E)
12 |
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| 10. |
The
number of "p" electrons in the ground state of
the chlorine atom is |
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| A)
12 |
B)
5 |
C)
10 |
D)
13 |
E)
11 |
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| 11. |
The
number of "d" electrons in the ground state of
the xenon atom is |
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| A)
54 |
B)
10 |
C)
15 |
D)
20 |
E)
26 |
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| 12. |
Assuming
the same order of fill for ions and neutral atoms, which
does NOT have the electron configuration 1s22s22p3
in its ground state? |
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| A)
N |
B)
F2+ |
C)
Na4+ |
D)
O+ |
E)
B- |
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| 13. |
Which
element has the outer configuration -4s13d10? |
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| A)
Zn |
B)
Zr |
C)
Cu |
D)
Ag |
E)
Ni |
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| 14. |
How
many electrons in the ground state of the krypton atom
occupy orbitals that have the magnetic quantum number m
= 2? |
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| A)
5 |
B)
9 |
C)
2 |
D)
10 |
E)
4 |
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| 15. |
The
number of "f" electrons in the ground state of
the bismuth atom is |
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| A)
14 |
B)
30 |
C)
18 |
D)
12 |
E)
0 |
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| 16. |
Which
atom contains twelve electrons in p-orbitals in its
ground state configuration? |
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| A)
Ne |
B)
Cl |
C)
Kr |
D)
K |
E)
Mg |
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| 17. |
How
many electrons occupy 4d orbitals in the ground state of
the bromine atom? |
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| A)
0 |
B)
1 |
C)
5 |
D)
10 |
E)
17 |
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| 18. |
The
total number of electrons in the atom which has the
valence electron configuration -6s26p3
is |
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| A)
5 |
B)
83 |
C)
52 |
D)
115 |
E)
51 |
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| 19. |
What
fraction of the electrons in the ground state of lead are in d-orbitals? |
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A) 0.37
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B) 0.26
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C) 0.52
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D) 0.60
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E) 0.72
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| 20. |
What
is the electron configuration of the ground state of the
Oxygen-18 atom? |
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| A) |
1s22s22p4 |
| B) |
1s22s22p8 |
| C) |
1s22s22p5 |
| D) |
1s22s22p2 |
| E) |
1s22s22p6 |
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