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Question

In which of the following sets the central atom of each member involves sp3 hybridisation?

A
IO4,ICl4,IF+4
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B
XeO3,XeO4,XeF4
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C
SO3,SO23,SO24
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D
PCl+4,BF4,ClO4
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Solution

The correct option is D PCl+4,BF4,ClO4
Hybridisation is calculated by steric number rule.
Steric no. = no. of atoms attached to central atom + no. of lone pairs present on central atom.
Steric no. for IO4=4+0=4 sp3; Steric no. for ICl4=4+2=6 sp3d2
Steric no. for IF+4=4+1=5 sp3d; Steric no. for SO3=3+0=3 sp2
Steric no. for SO24=4+0=4 sp3; Steric no. for SO23=3+1=4 sp3
Steric no. for PCl+4=4+0=4 sp3; Steric no. for BF4=4+0=4 sp3
Steric no. for XeO3=3+1=4 sp3; Steric no. for XeO4=4+0=4 sp3
Steric no. for XeF4=4+2=6 sp3d2; Steric no. for ClO4=4+0=4 sp3

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