Which tetrachloride is NOT hydrolysed by water at room temperature?

A $SiCl X_{4}$
B $GeCl X_{4}$
C $CCl X_{4}$
D $SnCl X_{4}$

Answer: C

Carbon has no vacant

d

orbitals and is crowded by four large Cl atoms, so water cannot attack it. The heavier tetrachlorides can expand their coordination number and hydrolyse.

Practice p-Block Elements: Groups 13 and 14 More on Trends in group 13 and group 14

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