JEE Main · 2023 · Shift-ImediumPB12-057

Which of the Phosphorus oxoacid can create silver mirror from AgNO3 solution?

p-Block Elements (Class 12) · Class 12 · JEE Main Previous Year Question

Question

Which of the Phosphorus oxoacid can create silver mirror from $\mathrm{AgNO_3}$ solution?

Options

a
$\mathrm{(HPO_3)_n}$
b
$\mathrm{H_4P_2O_5}$
✓
c
$\mathrm{H_4P_2O_6}$
d
$\mathrm{H_4P_2O_7}$

Correct Answerb

$\mathrm{H_4P_2O_5}$

Detailed Solution

Strategy: Identify the structures of Xenon oxyfluorides.

Step 1: Detailed Geometry

$\ce{XeOF2}$ : 3 electron pairs + 2 LP on $\ce{Xe}$ ? No, $\ce{Xe}$ has 8. 2 bond pairs to F, 2 to O. 4 electrons used, 4 left $\to$ 2 LP. T-shaped.
$\ce{XeO2F2}$ : 4 bond pairs to O/F, 1 LP. Seesaw shape.
$\ce{XeO3F2}$ : 5 bond pairs, 0 LP. Trigonal Bipyramidal.

Step 2: Conclusion Matching descriptions or shapes to the formulas provides the answer.

$\boxed{\text{Answer: (Option) [b] [Correct matching set]}}$

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