Question

(c) CaH2 NaH, SiH4, AIH3
Give valencies of Ca, Na, Si, and Al in the bove compounds
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Answer 1

Answer:

2,1,4,3 respectively

Explanation:

Number of hydrogen atoms in the compound = Valency

Answer 2

Answer:

2,1,4,3

Explanation:

valance of the atom is defined as no of hydrogen atoms combined with the atom