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Chemistry Question on The Valence Shell Electron Pair Repulsion (VSEPR) Theory

Which of the following is the correct and increasing order of lone pair of electrons on the central atom?

A

IF7<IF5<ClF3<XeF2IF_7 < IF_5 < ClF_3 < XeF_2

B

IF7<XeF2<ClF2<IF5IF_7 < XeF_2 < ClF_2 < IF_5

C

IF7<ClF3<XeF2<IF5IF_7 < ClF_3 < XeF_2 < IF_5

D

IF7<XeF2<IF5<ClF3IF_7 < XeF_2 < IF_5 < ClF_3

Answer

IF7<IF5<ClF3<XeF2IF_7 < IF_5 < ClF_3 < XeF_2

Explanation

Solution

The number of lone pairs of electrons on central atom in various given species are Thus the correct increasing order is IF70<IF51<ClF32<XeF23\underset{ 0}{IF_7 } < \underset{ 1}{IF_5 }< \underset{ 2}{ClF_3 } < \underset{3}{ X eF_2}