Which of the following pairs is isostructural | vedclass

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(A) To be isostructural,molecules must have the same hybridization and the same geometry.$1$. $XeF_2$: $Xe$ has $8$ valence electrons. Steric number $

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$XeF_2, IF_2^-$

Vedclass · Answer

(A) To be isostructural,molecules must have the same hybridization and the same geometry.$1$. $XeF_2$: $Xe$ has $8$ valence electrons. Steric number $= 2 + (8-2)/2 = 5$ ($sp^3d$ hybridization). It has $3$ lone pairs and $2$ bond pairs,resulting in a linear shape.$IF_2^-$: $I$ has $7$ valence electrons $+ 1$ (negative charge) $= 8$. Steric number $= 2 + (8-2)/2 = 5$ ($sp^3d$ hybridization). It has $3$ lone pairs and $2$ bond pairs,resulting in a linear shape.Since both have the same hybridization $(sp^3d)$ and geometry (linear),they are isostructural.$2$. $NH_3$ is pyramidal $(sp^3)$,while $BF_3$ is trigonal planar $(sp^2)$.$3$. $CO_3^{2-}$ is trigonal planar $(sp^2)$,while $SO_3^{2-}$ is pyramidal $(sp^3)$.$4$. $PCl_5$ is trigonal bipyramidal $(sp^3d)$,while $ICl_5$ is square pyramidal $(sp^3d^2)$.

List-$I$ (Shape)	List-$II$ (Molecules)
$A$. $T$-shaped	$I$. $XeF_4$
$B$. Trigonal planar	$II$. $SF_4$
$C$. Square planar	$III$. $ClF_3$
$D$. See-saw	$IV$. $BF_3$

List-$I$ (molecule/ion)	List-$II$ (Number of lone pairs of electrons on the central atom)
$(A)$ $XeF_2$	$(I)$ $2$
$(B)$ $XeO_3$	$(II)$ $0$
$(C)$ $XeF_4$	$(III)$ $3$
$(D)$ $PF_6^-$	$(IV)$ $1$

Which of the following pairs is isostructural?

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