Introduction to Chemical Bonds

The octet rule describes the tendency for reactions to result in each atom having 8 electrons in its outer shell (except the first shell).

• True
• False

What type of bond forms between Oxygen & Carbon?

• Chemical
• Physical
• Ionic
• Covalent
• Metallic

Which option best defines oxidation number?

• The charge an atom would get if it gained / lost electrons to reach a full valence shell.
• The number of valence electrons an element has.
• The number of oxygen atoms required to begin a reaction.
• The charge of an ion after covalent bonding.

Nitrogen has 3 valence electrons and an oxidation number of -3.

• TRUE
• FALSE

Anions are negative and are usually nonmetals.

• True
• False

Fluorine has 7 valence electrons and an oxidation number of -1.

• TRUE
• FALSE

Xenon has 8 valence electrons and an oxidation number of 8.

• TRUE
• FALSE

Carbon has 4 valence electrons and an oxidation number of 4.

• TRUE
• FALSE

What type of bond forms between Lithium and Sulfur?

• Chemical
• Physical
• Ionic
• Covalent
• Metallic

Cations are positive and are usually nonmetals.

• True
• False