Chapter 2 Multiple Choice Questions

. Which set of approximate bond angles at C1, C2, and N of the following molecule indicates the correct shape?

C1 120°, C2 120°, N 120°

C1 109.5°, C2 120°, N 109.5°

C1 109.5°, C2 120°, N 120°

C1 120°, C2 109.5°, N 109.5°

. Which set of approximate bond angles at C1, C2, and N of the following molecule indicates the correct shape?

C1 120°, C2 120°, N 120°

C1 120°, C2 120°, N 109.5°

C1 109.5°, C2 120°, N 120°

C1 120°, C2 109.5°, N 109.5°

. Which set of approximate bond angles at C1, O, and C2 of the following molecule indicates the correct shape?

C1 120°, O 120°, C2 120°

C1 120°, O 120°, C2 109.5°

C1 120°, O 109.5°, C2 120°

C1 120°, O 109.5°, C2 109.5°

. Which set of hybridization states of C1, C2, and N of the following molecule is correct?

C1 sp², C2 sp³, N sp³

C1 sp³, C2 sp², N sp³

C1 sp³, C2 sp², N sp²

C1 sp², C2 sp², N sp³

. Which set of hybridization states of C1, C2, and N of the following molecule is correct?

C1 sp², C2 sp³, N sp³

C1 sp², C2 sp², N sp³

C1 sp², C2 sp², N sp²

C1 sp², C2 sp³, N sp²

. Which species does not contain an sp³-hybridized atom?

BH₃

BH₄^-

NH₃

NH₄⁺

. Which species contains an sp³-hybridized atom?

. Which is the correct molecular formula of the following molecule?

C₈H₈

C₈H₁₀

C₇H₈

C₇H₁₀

. Which is the correct molecular formula of the following molecule?

C₇H₁₀O

C₇H₁₂O

C₆H₈O

C₆H₁₀O

. Which is the correct molecular formula of the following molecule?

C₃H₇NO

C₃H₈NO

C₄H₉NO

C₄H₁₀NO

. Which set of approximate bond angles at C1, C2, and C3 of the following molecule indicates the correct shape?

C1 120°, C2 120°, C3 120°

C1 180°, C2 120°, C3 109.5°

C1 180°, C2 120°, C3 120°

C1 180°, C2 180°, C3 120°

. Which set of approximate bond angles at C, the central O, and N of the following molecule indicates the correct shape?

C 109.5°, O 109.5°, N 120°

C 109.5°, O 120°, N 120°

C 120°, O 120°, N 120°

C 109.5°, O 120°, N 109.5°

. Which set of hybridization states of C1, C2, and C3 of the following molecule is correct?

sp², sp², sp²

sp², sp², sp

sp³, sp², sp

sp³, sp², sp²

. Which molecule contains an sp-hybridized atom?

HCO₂H

HNO₃

HNO₂

HCN

. Which species contains an sp²-hybridized atom?

BeH₂

BH₃

NH₃

H₃O⁺

. Which of the following structures represents a molecule different from the others?

. Which is the correct molecular formula of the following diene?

C₇H₁₄

C₇H₁₂

C₆H₁₂

C₆H₁₀

. Which is the correct molecular formula of the following dithiane?

C₈H₁₆S₂

C₈H₁₈S₂

C₆H₁₂S₂

C₆H₁₄S₂

. Which alkene has the (E)-configuration?

. Which of the following statements is wrong?

When two orbitals overlap in-phase with each other, a bonding molecular orbital forms.

When two orbitals overlap out-of-phase with each other, an antibonding molecular orbital forms.

When one of two atoms connected by a σ bond rotates about the bond axis, orbital overlap is lost.

When one of two atoms connected by a π bond rotates about the bond axis, orbital overlap is lost.

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