1.

The correct order of increasing bond angles in the following species is

Answer»

`ClO_(2)^(-) LT Cl_(2)O lt ClO_(2)`
`Cl_(2)O lt ClO_(2) lt ClO_(2)^(-)`
`ClO_(2) lt Cl_(2)O lt ClO_(2)^(-)`
`Cl_(2)O lt ClO_(2)^(-)`

Solution :
In `ClO_(2)`, CL is `sp^(2)`-hybridized and the bond ANGLE is `118^(@)`. In `Cl_(2)O`, O is `sp^(3)`-hybridized. However, due to repulsions between two big sized Cl atoms, the bond angle increases from `109^(@)`-28' to `111^(@)`. In `ClO_(2)^(-)`, Cl atom is also `sp^(3)`-hybridized but due to lp-bp repulsions, the angle decreases from `1096(@)`-28' to `103^(@)`. Thus the increasing order of bond angles is : `ClO_(2)^(-) lt Cl_(2)O lt ClO_(2)`


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