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Which of the following is a polar moleul...

Which of the following is a polar moleule ?

A

`SF_4`

B

`SiF_4`

C

`XeF_4`

D

`BF_3`

Text Solution

Verified by Experts

The correct Answer is:
A
Only `SF_4` has an unsymmetrical shape-seesaw. Therefore, it has a net dipole moment. While the rest of the molecules have symmetrical shapes and, hence, zero net dipole moment: `SiF_4` (tetrahedral), `XeF_4` (square planar), and `BF_3` (trigonal planar).
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