Q31 / 120 · VITEEE 2015 · Chemistry

Which of the following does not exist?

A
$\mathrm{Kl}+\mathrm{l}_{2} \longrightarrow \mathrm{Kl}_{3}$
Correct answer
B
$\mathrm{KF}+\mathrm{F}_{2} \longrightarrow \mathrm{KF}_{3}$
C
$\mathrm{KBr}+\mathrm{ICl}_{2} \longrightarrow \mathrm{K}[\mathrm{BrlCl}]$
D
$\mathrm{KF}+\mathrm{BrF}_{3} \longrightarrow \mathrm{K}\left[\mathrm{BrF}_{4}\right]$

Solution

In the absence of d-orbitals $\mathrm{F}_{2}$ does not combine with $\mathrm{F}^{-}$to form $\mathrm{F}_{3}^{-}$. ion.

Hence, the correct answer is option: 'B'.