Which of the following is non-existent ? | Chemistry | SolveeIt

Question

Which of the following is non-existent ?

$AlF^{3-}_6$

$CoF^{3-}_6$

$BF^{3-}_6$

$SiF^{2-}_6$

Answer

$BF^{3-}_6$

Explanation

Solution

Boron because of the absence of $d$ orbitals, can not extend its covalency up to $6$ . Its maximum covalency is four Thus, $BF^{3-}_{6}$ does not exist

Chemistry Question on p -Block Elements

Solution