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The approximate shape of a molecule can ...

The approximate shape of a molecule can often be predicted by using what is called the valence-shell electron-pair repulsion (VSEPR) model. Electrons in bonds and in lone pairs can be thought of a ''charge cloud'' that repel one another nad stay as far apart as possible, thus causing molecules to assume specific shapes.
The repulsive interactions of electron pairs decrease in the order:
Lone pair - Lone pair gt Lone pair - Bond pair gt Bond pair - Bond pair
These repulsive effects result in deviations from idealised shapes and alteration in bond angles in molecules.
Which of the following statements is incorrect?

A

In `ClF_3`, the axial Cl-F bond length is larger than equatorial Cl-F bond length.

B

In `SF_4`, F-S-F equatorial bond angle is not `120^@` and `104^@` due to lone pair-bond pair repulsions.

C

In `ICl_4^(-)` , bond angles is `90^@`.

D

In `OBr_2`, the bond angle is less than `OCl_2`.

Text Solution

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The correct Answer is:
D
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The decreasing order of the repulsive interaction of electron pair is (here,lp=lone pair,bp=bond pair)

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