1.

Ultiplication method.C (Valency 4) & CI (Valencyl)N (Valency 3) & H (Valency 1)C (Valency 4) & 0 (Valency 2)Ca (Valency 2) & 0 (Valency 2)​

Answer»

Answer:

1)4 2)3 3)8 4)4

Explanation:

1)4*1=4

2)3*1=3

3)4*2=8

4)2*2=4



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