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NEET 2018

Exam: NEET
Year: 2018
Subject: Chemistry
Chapter: p Block Elements (Group 13 & 14)

NEET 2018 · Chemistry · p Block Elements (Group 13 & 14)

Which one of the following elements is unable to form MF _ 6 ^ 3 -...

Which one of the following elements is unable to form

{MF}_{6}^{3 -}

ion?

Options

A $B$
B $Al$
C $Ga$
D $In$

Correct answer

A. $B$

Step-by-step solution

{MF}_{6}^{3 -}

Boron belongs to

{2}^{nd}

period and it does not have vacant

d -

orbital.

It can form only

3and4

bond and cannot form

6

bond.

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