Q.

The number of pπ-dπ bonds in SO3 molecule is :

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a

2

b

1

c

0

d

3

answer is C.

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Detailed Solution

  • S in SO3​ is sp2 hybridized. 
  • Three σ bonds are formed between the three sp2 hybridized orbital of sulphur and 3 pure p orbitals of three oxygen atoms. 
  • We have one pure p orbital and two pure d orbitals in sulphur. 
  • These 3 orbitals are involved in one pπ−pπ bond and two pπ−dπ bonds.
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The number of pπ-dπ bonds in SO3 molecule is :