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JEE Main levelSingle correct optionDifficulty 2 of 3pb207

Which one of the following tetrahalides does NOT exist?

A $GeCl X_{4}$
B $SnCl X_{4}$
C $SnI X_{4}$
D $PbI X_{4}$

Answer: D

Pb(IV) is strongly oxidising and iodide is a good reducing agent.

Pb X^{4 +}

would oxidise

I X^{-}

, so

PbI X_{4}

cannot be isolated. The others are known.

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