Covalent Bonding Review

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond formed when two nonmetal atoms share electrons.

Front

What is the bond angle in CH4?

Back

The bond angle in CH4 (methane) is approximately 109.5 degrees.

Front

Which molecule has a bond angle smaller than CH4?

Back

NF3 has a bond angle smaller than CH4.

Front

What is a lone pair in chemistry?

Back

A lone pair is a pair of valence electrons that are not shared with another atom.

Front

Which atom has only one lone pair?

Back

Phosphorus has only one lone pair.

Front

What describes the sharing of electrons in a covalent bond?

Back

Electrons are shared between nonmetal atoms.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two nonmetals, resulting in partial charges.

Front

What is a nonpolar covalent bond?

Back

A nonpolar covalent bond is a type of bond where electrons are shared equally between two nonmetals.

Front

What is the shape of NH3 (ammonia)?

Back

The shape of NH3 is trigonal pyramidal.

Front

What is the significance of lone pairs in molecular geometry?

Back

Lone pairs can affect the shape of a molecule by repelling bonding pairs of electrons.