Ionic Formula Review

Which is the charge that results when oxygen becomes an ion?

• +3
• +2
• -2
• -3

Which is the charge that results when Bromine becomes an ion?

• +2
• +1
• -1
• -2

Which is the charge that results when Potassium becomes an ion?

• +2
• +1
• -1
• -2

Which is the charge that results when calcium becomes an ion?

• +3
• +2
• -2
• -3

Which is the charge that results when copper (II) becomes an ion?

• +3
• +2
• -2
• -3

Which is the charge that results when Iron (III) becomes an ion?

• +3
• +2
• -2
• -3

Which is the charge of a nitrate ion?

• -3
• -1
• -2

Write the formula for barium + nitrogen

• Ba₂N₃
• Ba₃N₂
• BaN
• BaN₃

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

• KO.
• K₂O.
• K₂O₂.
• KO₂.

What is the formula for magnesium and phosphorous?

• Mg₃P₂
• Mg₂P₃
• Mg₂(PO₄)₃
• Mg₃(PO₄)₂