GeCl _4 is more stable than GeCl _2 while PbCl _2 is more stable … - Vidyadip

Question

$GeCl _4$ is more stable than $GeCl _2$ while $PbCl _2$ is more stable than $PbCl _4$. Explain.

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Answer

Elements Ge and Pb belong to 4th and 6th period in the group 14.
The group oxidation state of group 14 elements is +4.
However, the stability of other oxidation state which is lower by 2 units i.e., +2, increases down the group due to inert pair effect.
Therefore, the stability of the oxidation state +4 is more in Ge than in Pb while the stability of the oxidation state +2 is more in Pb than in Ge.

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