Question

26. Which of the following is a polar molecule?

(4) SF4
(2) SIF4
(3) XeF4
(4) BF3
explain it with reason........... ​

Answer 1

Answer:

SF4

Explanation:

If there are some lone pairs of electrons around the central atom,and if there is an odd no. ,the molecule is polar.Just like this molecule SF4.

Here, there is only one lone pair around the central atom (sulphur) which is odd no. so, SF4 is polar molecule.

Answer 2

SF4 is a polar molecule....coz,it have a lone pair,with 4 electronegative atom surrounding it,in which,the sum of dipole , moment of 4 electronegative atoms and that of lone pair is non-zero...

hope it helps you

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