Question

Among the following the pair in which the two species are not isostructural is
(a) SiF₄ and SF₄
(b) $IO_3^-$and XeO₃
(c) $BH_4^-$ and $NH_4^+$
(d) $PF_6^-$ and SF₆

Answer 1

Hello Friend

The answer of u r question is

Option.A

Thank you

Answer 2

Heya Dude!

Option is - (a) SiF₄ and SF₄

Hopes help ya