1.

The correct order of decreasing polarisability of ion is :

Answer»

`CL^-,BR^-,L^-,F^-`
`F^-,I^-,Br^-,cl^-`
`I^-,Br^-,Cl^-,F^-`
`F^-,Cl^-,Br^-, I^-`

Answer :C


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