Chem 101 - General Chemistry I » Spring 2021 » Chapter 8 Homework Quiz

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Question #1
The hybridization of Se in SeF6 is
A.   sp2
B.   sp
C.   sp3d
D.   sp3
E.   sp3d2
Question #2
If an atom has sp2 hybridization in a molecule, what is the maximum number of σ and π bonds that the atom can form?
A.   2 σ and 1 π
B.   3 σ and 1 π
C.   1 σ and 2 π
D.   3 σ and 0 π
E.   2 σ and 2 π
Question #3
A π bond is the result of the
A.   sideways overlap of two s orbitals.
B.   overlap of two p orbitals along their axes.
C.   overlap of an s orbital and a p orbital.
D.   sideways overlap of two parallel p orbitals.
E.   overlap of two s orbitals.
Question #4
According to valence-bond theory, the bonding in ketene, H2CCO, is best described as
A.   four σ bonds and two π bonds.
B.   five σ bonds.
C.   five π bonds.
D.   four σ bonds and one π bond.
E.   three σ bonds and two π bonds.
Question #5
Which of the following statements is/are true? 1. Electrons are never found in an antibonding molecular orbital 2. Antibonding molecular orbitals have electron density mainly outside the space between the two nuclei 3. All antibonding molecular orbitals are higher in energy than the atomic orbitals of which they are composed.
A.   2 and 3
B.   3 only
C.   1 and 2
D.   1 only
E.   2 only
Question #6
The nitrosyl ion, NO+, has ten bonding electrons and four antibonding electrons. Therefore, it has a bond order of
A.   2
B.   3
C.   5/2.
D.   1.
E.   7
Question #7
Which molecule or ion has a bond order of 2.5?
A.   O2–
B.   O2
C.   O22–
D.   O2+
E.   NO–

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