1.

A molecule MX_(3) has no dipole moment. The sigma bonding orbital used by M (atomic no < 21) is :

Answer»

`sp^(3)` hybridised
p unhybridised
sp hybridised
`sp^(2)` hybridised.

Solution :Since the MOLECULE has ZERO dipole moment. It MUST be linar and involves sp hybridisation.


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