Which one of the following molecules is polar?

Which one of the following molecules is polar?
  1. $\mathrm{XeF}_4$
  2. $\mathrm{IF}_5$
  3. $\mathrm{SbF}_5$
  4. $\mathrm{CF}_4$

Solution

The geometry of $\mathrm{IF}_5$ is square pyramidal with an unsymmetric charge distribution therefore this molecule is polar.

Asked in: JEE Main 2013 (09 Apr Online)

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