Question

write the formula of:- (a) ferric oxide. (b) calcium carbonate. (c) ammonium hydroxide. (d) zinc phosphate​

Answer 1

Answer:

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a) Fe2o3

b) CaCo3

.C) Nh4oH

d)Zn3(po4)2.

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Answer 2

Answer:

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Explanation:

(a) Ferric oxide : Fe₂O₃           ( ferric: Fe in +3 state,  ferrous: Fe in +2 state )

(b) Calcium carbonate : CaCO₃

(c) Ammonium hydroxide : NH₄OH

(d) Zinc phosphate : Zn₃ (PO₄)₂