Question

Which of the following does not form polyhalide ?
A. `Cl_(2)`
B. `I_(2)`
C. `Br_(2)`
D. `F_(2)`

Answer 1

Correct Answer - D
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)^(-)`