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Properties of Oxygen

Give reason w...

Question

Give reason why PbCl2 is more stable than PbCl4

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Solution

Pb is having 4 electrons in its outer most shell out of which 2 are present in s orbital whereas 2 are present in p orbital. due to poor shielding effect of d block and f block ( it means due to poor contraction of d block ) electrons in the s orbital are more strongly held in upper period of same group. So s electrons are inert and can not be removed and give valency of 4. Hence Pb forms 2 ions instead of 4 and PbCl2 becomes stable.

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