Which of the following compounds does not exist?

Which of the following compounds does not exist?
  1. $\mathrm{AsCl}_{5}$
  2. $\mathrm{SbCl}_{3}$
  3. $\mathrm{BiCl}_{5}$
  4. $\mathrm{SbCl}_{5}$

Solution

Due to inert pair effect the lower O.S. is
more common at the bottom of group

Asked in: JEE-TOPICTESTS-CHEMISTRY

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