Question

$Xe{F}_2$ is isostructural with-

• A. $Te{F}_2$
• B. $IC{l}_2^{-}$
• C. $SbC{l}_3$
• D. $BaC{l}_2$

Answer 1

The correct option is B $IC{l}_2^{-}$

In $Xe{F}_2$, $Xe$ is $s{p}^{3}d$ hybridised it means geometry is Trigonal bypyramidal. 3 lone pairs on equitorial position to minimise repulsion and 2 $F$ atoms at axial position thus shape is linear.
(a) $Te{F}_2$ six electrons in valance shell.
(b) In $IC{l}_2^{-}$, $I$ is $s{p}^{3}d$ hybridised it means geometry is Trigonal bypyramidal. 3 lone pairs on equitorial position to minimise repulsion and 2 $Cl$ atoms at axial position thus shape is linear.
(c)In $SbC{l}_3$, $Sb$ is $s{p}^3$ hybridised it means geometry is tetrahedral, but due to lone pair shape is pyramidal.
(d) $BaC{l}_2$ is an ionic compound.