CBSE Class 12-science Answered
what is inert pair eggect ?
how does it vary down the group?
Asked by akshay | 24 Oct, 2012, 06:40: AM
Expert Answer
The inert pair effect is the reluctance of s-electrons to take part in bond formation. A chemical consequence is the occurrence of oxidation states which are two units less than the group oxidation. For instance the more stable Pb state is Pb(II), with Pb(IV) being particularly unstable (e.g. the reduction PbCl4 
PbCl2 is easy).
PbCl2 is easy).Bigger atom have poor shielding effect as the d or f electrons are situated very far from each other. So, they give the nucleus to strengthen their hold on the s-electrons
and as s electrons show high penetrating effect i.e. they prefer to be near the nucleus.
and as s electrons show high penetrating effect i.e. they prefer to be near the nucleus.
Answered by | 25 Oct, 2012, 09:34: AM
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