CHEM 1030 EXAM 3 FORBES ACTUAL
EXAMINATION 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ 2) In counting the electron domains around the central atom in
VSEPR theory, a ________ is not included.
A) nonbonding pair of electrons
B) single covalent bond
C) core level electron pair
D) double covalent bond
E) triple covalent bond. Answer: C) core level electron pair
⩥ 3) The H-C-H bond angle in the CH4 ion is approximately ________.
A) 180
B) 120
C) 109.5
D) 60
E) 90. Answer: C) 109.5
⩥ 3) The electron-domain geometry of ________ is tetrahedral.
A) CBr4
B) PH3
,C) CCl2Br2
D) XeF4
E) all of the above except XeF4. Answer: E) all of the above except
XeF4
⩥ 4) Of the following species, ________ will have bond angles of 120°.
A) PH3
B) ClF3
C) NCl3
D) BCl3
E) All of these will have bond angles of 120°.. Answer: D) BCl3
⩥ 5) The molecular geometry of the BrO3- ion is ________.
A) trigonal pyramidal
B) trigonal planar
C) bent
D) tetrahedral
E) T-shaped. Answer: A) trigonal pyramidal
⩥ 6) The molecular geometry of the left-most carbon atom in the
molecule below is ________.
,A) trigonal planar
B) trigonal bipyramidal
C) tetrahedral
D) octahedral
E) T-shaped. Answer: C) tetrahedral
⩥ 10) The central Xe atom in the XeF4 molecule has ________
unbonded electron pair(s) and ________ bonded electron pair(s) in its
valence shell.
A) 1, 4
B) 2, 4
C) 4, 0
D) 4, 1
E) 4, 2. Answer: B) 2, 4
⩥ 11) An electron domain consists of ________.
a) a nonbonding pair of electrons
b) a single bond
c) a multiple bond
A) a only
, B) b only
C) c only
D) a, b, and c
E) b and c. Answer: D) a, b, and c
⩥ 12) The molecular geometry consists of ________.
a) a nonbonding pair of electrons
b) a single bond
c) a multiple bond
A) a only
B) b only
C) c only
D) a, b, and c
E) b and c. Answer: E) b and c
⩥ 13) The electron-domain geometry and the molecular geometry of a
molecule of the general formula ABn are ________.
A) never the same
B) always the same
C) sometimes the same
EXAMINATION 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ 2) In counting the electron domains around the central atom in
VSEPR theory, a ________ is not included.
A) nonbonding pair of electrons
B) single covalent bond
C) core level electron pair
D) double covalent bond
E) triple covalent bond. Answer: C) core level electron pair
⩥ 3) The H-C-H bond angle in the CH4 ion is approximately ________.
A) 180
B) 120
C) 109.5
D) 60
E) 90. Answer: C) 109.5
⩥ 3) The electron-domain geometry of ________ is tetrahedral.
A) CBr4
B) PH3
,C) CCl2Br2
D) XeF4
E) all of the above except XeF4. Answer: E) all of the above except
XeF4
⩥ 4) Of the following species, ________ will have bond angles of 120°.
A) PH3
B) ClF3
C) NCl3
D) BCl3
E) All of these will have bond angles of 120°.. Answer: D) BCl3
⩥ 5) The molecular geometry of the BrO3- ion is ________.
A) trigonal pyramidal
B) trigonal planar
C) bent
D) tetrahedral
E) T-shaped. Answer: A) trigonal pyramidal
⩥ 6) The molecular geometry of the left-most carbon atom in the
molecule below is ________.
,A) trigonal planar
B) trigonal bipyramidal
C) tetrahedral
D) octahedral
E) T-shaped. Answer: C) tetrahedral
⩥ 10) The central Xe atom in the XeF4 molecule has ________
unbonded electron pair(s) and ________ bonded electron pair(s) in its
valence shell.
A) 1, 4
B) 2, 4
C) 4, 0
D) 4, 1
E) 4, 2. Answer: B) 2, 4
⩥ 11) An electron domain consists of ________.
a) a nonbonding pair of electrons
b) a single bond
c) a multiple bond
A) a only
, B) b only
C) c only
D) a, b, and c
E) b and c. Answer: D) a, b, and c
⩥ 12) The molecular geometry consists of ________.
a) a nonbonding pair of electrons
b) a single bond
c) a multiple bond
A) a only
B) b only
C) c only
D) a, b, and c
E) b and c. Answer: E) b and c
⩥ 13) The electron-domain geometry and the molecular geometry of a
molecule of the general formula ABn are ________.
A) never the same
B) always the same
C) sometimes the same
