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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pt180

Which of the following statements about lead is/are correct?

A $PbO X_{2}$ oxidises conc. $HCl$ to $Cl X_{2}$
B $Pb X_{3} O X_{4}$ contains Pb in $+ 2$ and $+ 4$ states in a $2 : 1$ ratio
C $PbI X_{4}$ is stable at room temperature
D $PbCl X_{4}$ is more stable than $PbCl X_{2}$

Answer: A, B

Pb(IV) is a strong oxidant, so

PbO X_{2}

converts chloride to chlorine, and red lead is

2 PbO \cdot PbO X_{2}

.

PbI X_{4}

cannot exist because Pb(IV) oxidises iodide, and Pb(II) halides are more stable than Pb(IV) halides owing to the inert pair effect.

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