Sodium Bromide Sodium Charge:
Bromine Charge:
Formula:

Lithium Oxide
Lithium Charge:
Oxygen Charge:
Formula:

Magnesium Sulfide
Magnesium Charge:
Sulfur Charge:
Formula:

Boron Chloride
Boron Charge:
Chlorine Charge:
Formula:

Aluminum Sulfide
Aluminum Charge:
Sulfur Charge:
Formula:

Sodium Bromide

Sodium Charge: +1

Bromine Charge: -1

Formula: NaBr

Lithium Oxide

Lithium Charge: +1

Oxygen Charge: -2

Formula: Li₂O

Magnesium Sulfide

Magnesium Charge: +2

Sulfur Charge: -2

Formula: MgS

Boron Chloride

Boron Charge: +3

Chlorine Charge: -1

Formula: BCl₃

Aluminum Sulfide

Aluminum Charge: +3

Sulfur Charge: -2

Formula: Al₂S₃

Hope that helps. :)