What holds oppositely charged ions together in an ionic solid?

A separate shared electron pair for each neighboring ion pair

Gravitational attraction between the ions

Electrostatic attraction between ions

In the usual introductory model, what characterizes a covalent bond?

A shared pair of electrons attracted to both bonded nuclei

No electrons remain near either nucleus

Two nuclei merge into a single nucleus

Polar covalent because one atom always attracts more strongly

Ionic because two atoms are present

No; the bond dipoles can cancel because of molecular geometry

Yes; any polar bond makes the molecule polar

No molecule with polar bonds can be polar

Its atoms lie on a straight line

Its bent geometry prevents its O-H bond dipoles from canceling

Oxygen and hydrogen attract bonding electrons equally

It is a useful pattern with exceptions

Every atom in every stable compound must have eight valence electrons

Hydrogen usually needs eight valence electrons

All electrons are fixed permanently to one atom

The metal ions must flow through the solid to carry the current

Mobile electrons carry charge through the metallic structure

Every covalent bond inside every molecule

Interactions between its molecules

Forces inside the atomic nuclei

Every textbook uses one exact universal boundary

Electronegativity gives no information about bond polarity

The cutoff is a convention, while bonding character changes continuously

Chemical Bonding: ten conceptual practice questions on ions, electron sharing, and molecular shape. Every answer is explained.

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For High school students and adults reviewing the topic.

About 12 minutes. 10 questions.

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