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Q.

The maximum covalency of nitrogen is

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a

2

b

3

c

4

d

5

answer is C.

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Detailed Solution

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  • Nitrogen has two 2s and three 2p valence electrons. By sharing the three 2p electrons, nitrogen can form three covalent bonds.
  • For example, NH3. But still the nitrogen atom has a lone pair of electrons from 2s orbital.
  • By donating these two electrons from lone pair, it can form one bond.
  • For example, NH4+.
    Thus, nitrogen can form four bonds.
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