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A nonpolar molecule has polar bonds. What must be true of the molecule? a. The symmetry of the molecule must be such that the polar bonds cancel each other out. b. The symmetry of the molecule must be such that the polar bonds do not cancel each other out. c. This is not possible. The molecule must be polar.

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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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Chapter
Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 5, Problem 6SC
Textbook Problem
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A nonpolar molecule has polar bonds. What must be true of the molecule?

a. The symmetry of the molecule must be such that the polar bonds cancel each other out.

b. The symmetry of the molecule must be such that the polar bonds do not cancel each other out.

c. This is not possible. The molecule must be polar.

Interpretation Introduction

Interpretation:

The true statement from the given statements about a nonpolar molecule having polar bonds is to be determined.

Concept introduction:

The bond formed between atoms with different electronegativities is a polar bond.

In the nonpolar bonds, the electrons are equally shared between the atoms.

In the polar bonds, the electrons are shared unequally between the atoms, which creates a dipole moment.

To classify the molecule as polar or nonpolar, the molecular geometry of the molecule is considered with the help of the Lewis structure and the VSPER theory. If the molecule has a dipole moment, the molecule is termed as a polar molecule. The symmetrical molecules are nonpolar because the dipole moments cancel each other.

If a molecule has polar bonds, it may or may not be polar depending on the symmetry of the molecule.

Explanation of Solution

Reason for correct option:

Polar bonds are formed between the elements with different electronegativities. The difference in electronegativities causes uneven electron distribution between the atoms, resulting into charge separation. Due to charge separation, there is dipole formation. If the opposing dipoles cancel, the resulting molecule will be nonpolar. Therefore, the polar bonds may result in a nonpolar molecule, if the symmetry of the molecule is such that the polar bonds cancel each other...

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Chapter 5 Solutions

Chemistry In Focus
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