7C Exam Review

Front

What is the total number of electrons in HCN?

Back

10

Front

How many electrons are drawn incorrectly in the Lewis structure of HCN?

Back

Zero

Front

What is the correct Lewis Dot Structure for ammonia (NH3)?

Back

The Lewis Dot Structure shows nitrogen in the center with three hydrogen atoms bonded to it, and a lone pair of electrons on nitrogen.

Front

What are ionic bonds?

Back

Ionic bonds are formed when valence electrons are transferred between atoms.

Front

How many electrons do the nitrogen atoms share in a nitrogen molecule (N2) with a triple bond?

Back

6

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot Structure is a diagram that shows the bonding between atoms and the lone pairs of electrons in a molecule.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how atoms bond with each other and the type of bond formed.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell.