Ionic Charge and Formulas

When an atom loses electrons, it becomes...

• Positive

• Negative

• Neutral

• A different atom

When an atom gains electrons, it becomes...

• Positive

• Negative

• Neutral

• A different atom

How many electrons does chlorine (Cl) need to gain to have a full octet?

• 1

• 2

• 3

• 4

How many electrons does a calcium (Ca) atom need to lose to have a full octet?

• 1

• 2

• 3

• 4

What charge does an oxygen (O) ion have?

• +2

• -2

• +6

• -6

Group 1 elements tend to acquire which charge when they form ions?

• +1

• -1

• +7

• -7

Which is the formula for the compound formed between Li⁺¹ and O^-2?

• LiO

• Li₂O₂

• LiO₂

• Li₂O

Which is the formula for the compound formed between Al⁺³ and N^-3?

• Al₃N₃

• Al³N³

• AlN

• AlN₃

Which is the formula for the compound formed between Ca⁺² and OH^-?

• Ca(OH)₂

• Ca₂OH

• CaOH₂

• CaOH(II)

Which is the formula for the compound formed between boron (B) and oxygen (O)?

• BO

• B₃O₂

• B₂O₃

• BO₂