Ionic Bonding and Simple Ionic Compounds

Ions

Atoms that gain or lose electrons to follow the octet rule.

Octet rule

The highest energy level of an atom is full when it forms ions.

Charge

The charge of an atom is equal to the number of protons minus the number of electrons.

Anions

Atoms that gain electrons and become negatively charged.

Cations

Atoms that lose electrons and become positively charged.

Main Group nonmetals

Atoms that tend to gain electrons and form anions.

Main Group metals

Atoms that tend to lose electrons and form cations.

Ionic Compounds

Compounds formed by the electrostatic attraction between oppositely charged ions.

Ionic bond

The bond formed between ions in an ionic compound.

Formulas of Ionic compounds

The combination of cations and anions in a formula to achieve a neutral charge.

Transition metal Ions

Transition metals that can form more than one cation and are designated by Roman numerals.

Polyatomic Ions

Groups of atoms bonded together with an overall electric charge.

Transition metal cations and Polyatomic Ions

The charge on a transition metal cation can be determined by the amount of negative charge from the anion.