AP Chemistry Unit 2 Review

Front

What does the Lewis structure of N2H2 show?

Back

Each nitrogen has one lone pair.

Front

In the nitrite ion (NO2-), what can be said about the bonds?

Back

Both bonds are the same because of resonance.

Front

What is a valid Lewis structure of IF3?

Back

A valid Lewis structure cannot be drawn without violating the octet rule.

Front

What does the interaction energy graph of two hydrogen atoms represent?

Back

The bond length of the H2 molecule is represented by point B on the graph.

Front

What is a Lewis structure?

Back

A diagram that shows the bonding between atoms and the lone pairs of electrons.

Front

What is resonance in chemistry?

Back

Resonance is the concept that some molecules can be represented by two or more valid Lewis structures.

Front

What is the octet rule?

Back

Atoms tend to bond in such a way that they have eight electrons in their valence shell.

Front

What is a lone pair?

Back

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

Front

What is a bond length?

Back

The distance between the nuclei of two bonded atoms.

Front

What is a double bond?

Back

A chemical bond where two pairs of electrons are shared between two atoms.