B) orbital (b)
C) orbital (c)
D) orbital (d)
82) Which of the above fourth-shell orbitals is a 4dx2-y2 orbital?
A) orbital (a)
B) orbital (b)
C) orbital (c)
D) orbital (d)
83) Which of the above fourth-shell orbitals is a 4dyz orbital?
A) orbital (a)
B) orbital (b)
C) orbital (c)
D) orbital (d)
84) For the fourth-shell orbital shown below, what are the principal quantum number, n, and the
angular momentum quantum number, l?
A) n = 4 and l = 0
B) n = 4 and l = 1
C) n = 4 and l = 2
D) n = 4 and l = 3
85) For the fourth-shell orbital shown below, what are the principal quantum number, n, and the
angular momentum quantum number, l?
A) n = 4 and l = 0
B) n = 4 and l = 1
C) n = 4 and l = 2
D) n = 4 and l = 3
86) For the fourth-shell orbital shown below, what are the principal quantum number, n, and the
angular momentum quantum number, l?
A) n = 4 and l = 0
B) n = 4 and l = 1
C) n = 4 and l = 2
D) n = 4 and l = 3
87) For the fourth-shell orbital shown below, what are the principal quantum number, n, and the
angular momentum quantum number, l?
A) n = 4 and l = 0
B) n = 4 and l = 1
C) n = 4 and l = 2
D) n = 4 and l = 3
88) What is the ground-state valence-shell electron configuration of the group of elements
indicated by the shaded portion of the periodic table?
A) ns2
B) ns2np2
C) ns2(n-1)d2
D) ns2(n-2)f2
89) What is the ground-state valence-shell electron configuration of the group of elements
indicated by the shaded portion of the periodic table?
A) ns2
B) ns2np2
C) ns2(n-1)d2
D) ns2(n-2)f2
90) What is the ground-state valence-shell electron configuration of the group of elements
indicated by the shaded portion of the periodic table?
A) ns2
B) ns2np2
C) ns2(n-1)d2
D) ns2(n-2)f2
91) Which element, indicated by letter on the periodic table above, contains one f electron?
A) A
B) B
C) C
D) D
92) Which element, indicated by letter on the periodic table above, has the ground-state electron
configuration [Ar]4s2 3d2?
A) A
B) B
C) C
D) D
93) Which period of elements, indicated by letter on the periodic table, has electrons whose
highest principal quantum number n is 5?
A) A
B) B
C) C
D) D
94) Which group of elements, indicated by letter on the periodic table, has electrons with the
ground-state valence-shell electron configuration ns2 np4?
A) A
B) B
C) C
D) D
95) Which groups of elements, indicated by letter on the periodic table, have two unpaired p
electrons in their valence shell?
A) A and B
B) A and C
C) B and C
D) B and D
96) Which grouping of elements, indicated by letter on the periodic table above, represents the f–
block elements?
A) A
B) B
C) C
D) D
28
97) Which grouping of elements, indicated by letter on the periodic table above, represents the d–
block elements?
A) A
B) B
C) C
D) D
98) Which grouping of elements, indicated by letter on the periodic table above, represents the p–
block elements?
A) A
B) B
C) C
D) D
99) Which grouping of elements, indicated by letter on the periodic table above, represents the s–
block elements?
A) A
B) B
C) C
D) D
100) Which orbital-filling diagram violates the Pauli exclusion principle?
A)
B)
C)
D)
101) Which orbital-filling diagram violates Hund’s rule?
A)
B)
C)
D)
102) Which orbital-filling diagram represents the ground state of oxygen?
A)
B)
C)
D)
103) Which orbital-filling diagram represents the ground state of vanadium?
A)
B)
C)
D)
104) Which orbital-filling diagram represents the anomalous ground state of chromium?
A)
B)
C)
D)
105) 2Atoms of which element, indicated by letter on the periodic table, have the orbital-filling
diagram shown below?
A) A
B) B
C) C
D) D
106) Atoms of which element, indicated by letter on the periodic table, have the orbital-filling
diagram shown below?
A) A
B) B
C) C
D) D
107) Atoms of which element, indicated by letter on the periodic table, have the orbital-filling
diagram shown below?
A) A
B) B
C) C
D) D
The spheres below represent atoms of Sb, As, P, and N (not necessarily in that order).
108) Which one of these spheres represents an atom of Sb?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
109) Which one of these spheres represents an atom of P?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
110) Which one of these spheres represents an atom of N?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
111) Which one of these spheres represents an atom of As?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
The spheres below represent atoms of Li, Be, B, and F (not necessarily in that order).
112) Which one of these spheres represents an atom of Be?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
113) Which one of these spheres represents an atom of F?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
114) Which one of these spheres represents an atom of Li?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
115) Which one of these spheres represents an atom of B?
A) sphere (a)
B) sphere (b)
C) sphere (c)
D) sphere (d)
2.2 Algorithmic Questions
1) The work function of cesium metal is 188 kJ/mol. What is the minimum frequency of light
needed to eject electrons from cesium?
A) 4.71× Hz
B) 5.54 × 1 Hz
C) 1.09 × Hz
D) 1.13 × Hz
2) What are the possible values of n and ml for an electron in a 4d orbital?
A) n = 1, 2, 3, or 4 and ml = 2
B) n = 1, 2, 3, or 4 and ml = -2, -1, 0, +1, or +2
C) n = 4 and ml = 2
D) n = 4 and ml = -2, -1, 0, +1, or +2
3) How many subshells are there in the shell with n = 4?
A) 3
B) 4
C) 6
D) 18
4) What are the possible values of l if n = 6?
A) 6
B) 0, 1, 2, 3, 4, or 5
C) -4, -3, -2, -1, 0, +1, +2, +3, or +4
D) -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, or +5
5) How many orbitals are there in the fourth shell?
A) 3
B) 4
C) 6
D) 16
6) For a hydrogen atom, which electronic transition would result in the emission of a photon
with the highest energy?
A) 2s → 3p
B) 2p → 6d
C) 6p → 4s
D) 7f → 5d
7) For hydrogen, what is the wavelength of the photon emitted when an electron drops from a 4d
orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.
A) 656.3 nm
B) 486.2 nm
C) 364.6 nm
D) 2.057 × 10-3 nm
8) Which has the highest Zeff for its valence electrons?
A) Li
B) Na
C) C
D) F
9) Which of the following have their valence electrons in the same shell?
A) Li, N, F
B) B, Si, As
C) N, As, Bi
D) He, Ne, F
10) Which of the following have the same number of valence electrons?
A) Rb, Sb, I
B) Ga, Sn, Bi
C) As, Sb, Bi
D) Ar, Kr, Br
11) What is the general valence-electron ground-state electron configuration for neutral alkaline
earth metals?
A) ns1
B) ns2
C) 1s22s1
D) 1s22s2
12) Which element has the ground-state electron configuration [Xe]6s2 4f7?
A) Re
B) Ir
C) Eu
D) Gd
13) How many valence electrons does a neutral polonium atom have?
A) 2
B) 4
C) 6
D) 84
14) Of the following, which atom has the largest atomic radius?
A) Rb
B) I
C) Cs
D) At
15) Of the following, which atom has the smallest atomic radius?
A) K
B) As
C) Rb
D) Sb
16) Which atom in each group (I and II) has the smallest atomic radius?
(I) Ba, Hf, Bi (II) As, Sb, Bi
A) Ba; As
B) Ba; Bi
C) Bi; As
D) Hf; Bi
2.3 Short Answer Questions
1) Compared to ultraviolet radiation, infrared radiation occurs at ________ wavelengths,
________ frequencies, and ________ energies.
2) The visible region of the electromagnetic radiation spectrum extends from ________ nm to
________ nm.
3) Light behaves as if it were a stream of small particles, called ________, each having an
amount of energy called a ________.
4) A solution to the Schrödinger wave equation is a ________, or orbital, represented by the
symbol Ψ, and the probability of finding an electron defined by Ψ within a given volume of
space around the nucleus is ________.
5) The energy of an electron in a multielectron atom depends on the quantum numbers ________
and ________.
6) An orbital with n = 4 and l = 1 is a ________ orbital.
7) According to the Bohr model of the atom, when an electron goes from a higher-energy orbit to
a lower-energy orbit, it ________ electromagnetic energy with an energy that is equal to the
________ between the two orbits.
8) Copper has the anomalous electron configuration ________.
9) Using shorthand notation, the electron configuration of Ni is ________.
10) Compared to sulfur, chlorine has a ________ effective nuclear charge, Zeff, and a ________
atomic radius.