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Question

Maximum number of covalent bonds formed by N and P respectively are :
  1. 3, 5
  2. 3, 6
  3. 4, 5
  4. 4, 6

A
3, 5
B
3, 6
C
4, 5
D
4, 6
Solution
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N2s2p3
P3s2p3
But as P can expand its valency using vacant d-orbitals so maximum valency of N & P are 3 and 5.

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