Which one of the following elements is unable to form MF_ 6 ^ 3- … - Vidyadip

MCQ

Which one of the following elements is unable to form $MF_{6}^{3-}$ ion?

A
$Ga$
B
$Al$
✓
$B$
D
$In$

✓

Answer

Correct option: C.

$B$

c
$\mathrm{MF}_{6}^{-3}$

Boron belongs to $2^{\text {nd }}$ period and it does not have vacant $d-$orbital.

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