1.

Which of the following does not form polyhalide ?

Answer»

`Cl_(2)`
`I_(2)`
`Br_(2)`
`F_(2)`

Solution :It is because of the non-availability of d-orbitals in the valence shell of F atom. Halide ions associate with the MOLECULES of halogen (EXCEPT fluorine) or oto go inter halogens to FORM poly halide ions.
`I^(-)+I_(2) to I_(3)^(-) +Cl_(2) to Cl_(3)^(-)`


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