Give reason: PbCl, is less stable than PbCl.
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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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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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