How to find the hybridisation of chlorine in chlorate ion?

Hybridization of chlorine in chlorate ion is sp3 hybridized

and has a pyramidal shape

In chlorate ion ClO3- the three oxygen atom will have 1 unpaired orbital

Chlorine’s unoccupied d orbitals will be used for bonding here. The chlorine

makes 2 double bonds with O and a single bond with O-

One lone pair will be there on chlorines and thus it shows some distortion in the arrangement

1/2{No:of valence electron in central atom+ Monovalent atom attached to central metal atom+anionic charge-cationic charge}

This formula can be used for identifying hybridization or,

(total valence electrons)/8 is used for simple ions

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