{13/14} Lewis Structures and Covalent Bonds

Question 1

Define:

Resonance?

Resonance Hybrid?

Answer 1

One of two more valid Lewis structures shown with double-headed arrows between them to indicate that the actual structure of the molecule is intermediate between them

The actual structure of a molecule that is intermediate between two or more resonance structures

Question 2

Define:

Formal Charge?

Answer 2

The charge that an atom in a Lewis structure would have if all the bonding electrons were shared equally between the bonded atoms

Valence electrons - (# of bonds + electrons)

Question 3

Define:

Triple Bond?

Answer 3

A bond that forms when three electron pairs are shared between atoms

Question 4

Define:

Bond Energy?

Answer 4

For a chemical bond, the energy required to break 1 mol of the bond in the gas phase

Question 5

Define:

Double Bond?

Answer 5

The bond that forms when two electrons are shared between atoms

Question 6

Define:

Expanded Octet?

Answer 6

An electron pair that has more than 8 electrons

Question 7

Define:

Lone Pair?

Answer 7

A single pair of two electrons

Question 8

Define:

Bond Length?

Answer 8

Average length of a bond between two particular atoms in a variety of compounds

Question 9

Define:

Lewis electron-dot Structure?

Answer 9

A way of drawing the bonds and electrons of molecules