Ionic Binary Formulas

A negatively-charged ion.

• atom
• cation
• anion
• electron

An atom that has lost or gained electrons; an atom with a charge.

• cation
• anion
• isotope
• ion

Cations are

• positive
• negative
• on the right side of the periodic table.
• nonmetals

Na ⁺  and  S ^-2

• Na₂S
• NaS₂
• Na₂S₂
• NaS

K ⁺  and  N^-3

• KN
• KN₃
• K₃N₃
• K₃N

The chemical formula for an ionic compound of potassium and oxygen is

• KO.
• K₂O.
• K₂O₂.
• KO₂.

How many valence electrons does a bromine atom have?

• 1
• 2
• 6
• 7

When naming ionic compounds, the cation is always named first and the anion is always named second.

• False
• True

Which of the following will form an ion with a 2- charge?

• Ca
• Se
• Ge
• N

How do the following two elements bond together?
Al³⁺  O^2-         

• AlO
• Al₂O₃
• Al₃O₆
• Al₃O₂