Write the formula for Potassium Oxide

(a)  

Write the formula for Magnesium Hydroxide.

(a)  

Write the formula for Sodium Sulfate

(a)  

Write the formula for Iron (III) Nitride

(a)  

Write the formula for Iron (II) Nitride

(a)  

Write the formula for silver chloride

(a)  

Write the formula for Zinc Carbonate

(a)  

Write the formula for Sodium Phosphate

(a)  

Write the formula for Ammonium Sulfide

(a)