NEET 2016 Phase 2 · ChemistryPrevious Year Question

Among the following, which one is a wrong statement?

Answer: (C) $SeF X_{4}$ and $CH X_{4}$ have the same shape. \textbf{Answer:} (C) $SeF X_{4}$ and $CH X_{4}$ have the same shape \textbf{Solution:} $SeF X_{4}$ (4 bond pairs + 1 lone pair, $s p^{3} d$ ) is see-saw shaped, whereas $CH X_{4}$ (4 bond pairs, $s p^{3}$ ) is tetrahedral; they do NOT have the same shape, so statement C is wrong.

A. $PH X_{5}$ and $BiCl X_{5}$ do not exist
B. $p π$ – $d π$ bonds are present in $SO X_{2}$
C. $SeF X_{4}$ and $CH X_{4}$ have the same shape✓
D. $I X_{3} X^{+}$ has bent geometry

Correct Answer

Solution & Explanation

\textbf{Answer:} (C) $SeF X_{4}$ and $CH X_{4}$ have the same shape \textbf{Solution:} $SeF X_{4}$ (4 bond pairs + 1 lone pair, $s p^{3} d$ ) is see-saw shaped, whereas $CH X_{4}$ (4 bond pairs, $s p^{3}$ ) is tetrahedral; they do NOT have the same shape, so statement C is wrong.

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