20
QuizMultiple Choice

Chemical Bonding and Reactions — Test

Question 20 • Chemistry

How do ionic bonds affect the properties of ionic compounds?

Answer
A
The bonds strongly hold ions together, reducing the boiling point.
B
The bonds weakly hold ions together, increasing the melting point.
C
The bonds prevent electrons from moving throughout the crystal, so a solid ionic compound is a good conductor.
D
The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor.

Explanation

In a solid ionic crystal, oppositely charged ions are held in fixed positions by strong electrostatic attractions. Because the ions cannot move freely, solid ionic compounds do not conduct electricity well. The correct choice is B, which describes the limited movement of ions in the crystal.

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