5 Steps to a 5 AP Chemistry 2019
Bonding ❮ 161
- Which of the following has more than one
unshared pair of valence electrons on the central
atom?
(A) BrF 5
(B) NF 3
(C) IF 7
(D) ClF 3
- Which of the following groups contains only ele-
ments than can exceed an octet in at least some
of their compounds?
(A) Sb, Br, N
(B) As, I, Si
(C) C, S, Bi
(D) O, Te, Ge
- The only substance listed below that contains
ionic, s, and p bonds is:
(A) Ca 3 P 2
(B) CO 2
(C) CaCO 3
(D) NH 3
- The electron pairs point toward the corners of
which geometrical shape for a molecule with sp^2
hybrid orbitals?
(A) trigonal planar
(B) octahedron
(C) trigonal bipyramid
(D) trigonal pyramid
- Regular tetrahedral molecules or ions include
which of the following?
(A) SF 4
(B) NH 4 +
(C) XeF 4
(D) ICl 4 -
- Which of the following molecules or ions has the
greatest number of unshared electrons around
the central atom?
(A) SO 2
(B) NO 3 -
(C) KrF 2
(D) SF 4
14. Which of the following molecules is the least
polar?
(A) PH 3
(B) CH 4
(C) H 2 O
(D) NO 2
15. Which of the following molecules is the most
polar?
(A) NH 3
(B) N 2
(C) CH 3 I
(D) BF 3
16. Each of the following processes involves breaking
bonds, and most involve forming new bonds.
Which of the following processes involves break-
ing an ionic bond?
(A) H 2 (g) + I 2 (g) → 2 HI(g)
(B) 2 KCl(s) → 2 K(g) + Cl 2 (g)
(C) Ca(s) → Ca(g)
(D) 2 C 8 H 18 (g) + 25 O 2 (g) → 16 CO 2 (g) +
18 H 2 O(g)
17. Which of the following sets of bonds is listed in
order of increasing covalent character?
(A) Na–Cl < Al–Cl < P–Cl < Cl–Cl
(B) Na–Cl < P–Cl < Cl–Cl < Al–Cl
(C) P–Cl < Cl–Cl < Al–Cl < Na–Cl
(D) Al–Cl < Na–Cl < P–Cl < Cl–Cl
18. Which of the following molecules does NOT
contain one or more p bonds?
(A) CO 2
(B) SF 6
(C) CO
(D) SO 3
