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JEE Main levelSingle correct optionDifficulty 2 of 3pt220

Which of the following dioxides is the strongest oxidising agent?

A $CO X_{2}$
B $GeO X_{2}$
C $SnO X_{2}$
D $PbO X_{2}$

Answer: D

In group 14 the

+ 2

state becomes more stable down the group because of the inert pair effect.

PbO X_{2}

readily changes to

PbO

and releases oxygen, so it is a strong oxidant, for example oxidising conc.

HCl

to

Cl X_{2}

.

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