Which of the following statements are correct? a. All the three N… - Vidyadip

MCQ

Which of the following statements are correct?
$a.$ All the three $N—O$ bond lengths in $\mathrm{HNO}_3$ are equal.
$b.$ All $P—Cl$ bond lengths in $\ce{PCl_5}$ molecule in gaseous state are equal.
$c. P_4$ molecule in white phohsphorus have angular strain therefore white phosphorus is very reactive.
$d. \text{PCl}$ is ionic in solid state in which cation is tetrahedral and anion is octahedral.

A
$a$ and $b$
B
$b$ and $c$
C
$a$ and $c$
✓
$c$ and $d$

✓

Answer

Correct option: D.

$c$ and $d$

All the three $N – O$ bond lengths in $\mathrm{HNO}_3$ are not equal.
All $\text{P – Cl}$ bond lengths in $\mathrm{PCl}_5$ molecule in gaseous state are not equal. Axial bond is longer than equatorial bond.
$P_4$ molecule in white phosphorus have angular strain therefore white phosphorus is very reactive.
$\mathrm{PCl}_5$ is ionic in solid state in which cation is tetrahedral and anion is octahedral.

Cation $- \left[\mathrm{PCl}_4\right]^{+}$
Anion $- \left[\mathrm{PCl}_6\right]^{-}$

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