The maximum covalency of a non-metallic group 15 element ' E ' with weakest $\mathrm{E}-\mathrm{E}$ bond is :

The maximum covalency of a non-metallic group 15 element ' E ' with weakest $\mathrm{E}-\mathrm{E}$ bond is :
  1. 4
  2. 6
  3. 3
  4. 5

Solution

$\mathrm{N}-\mathrm{N} < \mathrm{P}-\mathrm{P}$ : single $(\sigma)$ bond strength
Due to L.P.-L.P. replusion
and maximum possible covalency of nitrogen is 4.

Asked in: JEE Main 2025 (22 Jan Shift 2)

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