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Question

In H3PO3, hybridisation of P atom is :
  1. sp
  2. sp2
  3. sp3d
  4. sp3

A
sp3
B
sp
C
sp2
D
sp3d
Solution
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In the orthophosphorus acid, the central phosphorus atom is sp3 hybridized. In fact, in all the oxyacids of phosphorus, each phosphorus atom is sp3 hybridized. This results in tetrahedral geometry around phosphorus atom.

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