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Chemistry, 7/e
Raymond Chang, Williams College
Quantum Theory and the Electronic Structure of Atoms

Self Assessment A



1

Calculate the wavelength, in nanometers, of visible light having a frequency of 4.37 x 10 14s-1.
A)12.0 nm
B)343 nm
C)686 nm
D)674 nm
E)None of the above.
2

For the hydrogen atom, En = -(1/n2)RH, where RH = 2.18 x 10-18 J. The wavelength of the transition from the ground state to the n = 3 state is:
A)1.03 x 10-7 m
B)6.56 x 10-8 m
C)-1.03 x 10-7 m
D)-6.76 x 10-8 m
E)4.27 x 10-8 m
3

Which of the following is not a possible value of ml for an electron with l = 2?
A)-1
B)0
C)+1
D)+2
E)+3
4

The set of quantum numbers that correctly describes an electron in a 3p orbital is:
A)n = 3; l = 0; ml = 0; ms = 0
B)n = 3; l = 2; ml = -2, -1, 0, 1, or 2; ms = +1/2 or -1/2
C)n = 3; l = 1; ml = -1, 0, or 1; ms = +1/2 or - 1/2
D)n = 4; l = 0; ml = -1, 0, or 1; ms = +1/2 or -1/2
E)None of the above.
5

What is the total number of orbitals associated with the principle quantum number n = 2?
A)1
B)2
C)3
D)4
E)None of the above.
6

What is the maximum number of electrons that can be accommodated in the shell with n = 4?
A)32
B)18
C)24
D)10
E)None of the above.
7

An atom of chromium has ___ unpaired electrons and is ___.
A)3, diamagnetic
B)5, diamagnetic
C)3, paramagnetic
D)5, paramagnetic [Remember, Cr is a special case. Review Section 7.8.]
E)6, paramagnetic
8

The electronic configuration and filling order of the element whose atomic number is 26 is:
A)1s22s22p63s23p64s03d8
B)1s22s22p63s23p63d64s2
C)1s22s22p63s23p64s23d6
D)1s22s22p63s23p64s23d44p2
E)None of the above.
9

An atom in its ground state contains 33 electrons. How many of these electrons are in p orbitals?
A)15
B)12
C)3
D)33
E)None of the above.
10

Using the noble gas core designation, which of the configurations below correctly describes the ground state electron configuration of Cu?
A)[Ne]4s23d9
B)[Ar]4s23d9
C)[Kr]4s13d10
D)[Ar]4s13d10
E)None of the above.








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