Question

The covalence of Central atom is maximum in
A. HCN B. NH+4 C. PCL5 D. H2O

Answer 1

Answer:

answer is d

Explanation:

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Answer 2

Answer:

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Explanation:

First, note that covalency = number of bonds formed.

In HCN, the carbon atom forms 1 bond with hydrogen and 3 bonds with nitrogen so covalency = 4. In ammonium ion, nitrogen atom forms 1 bond with each hydrogen. So, covalency = 4. In phosphorus pentachloride, the phosphorus atom forms 1 bond with each chlorine atom. So, covalency = 5. In a water molecule, the covalency of oxygen = 2.