+2 oxidationstate of lead is more stablethan +4 oxidation state . Give

1.	+2 oxidationstate of lead is more stablethan +4 oxidation state . Give reasons.
Answer» Solution :Among the elements of group 14, carbon does not have d- or f-electrons . Therefore , it does not show inert pair EFFECT. Consequently, it shows an oxidationstate of`+4`due to the presenceof TWO electrons in the s- andtwo electronsin the p-orbitalof thevalenceshell. In contrast , all other elements from Ge to Pb containeither dor both d- and f-electron increases, the inertpair effect becomesmore and more prominent. In other words,as we move dow the group from Ge to Pb, the STABILITY of +2 oxidation stateincreases whilethat of `+4` oxidationstate decreases.Therefore , the tendencyof Ge, SN and Pb to EXHIBIT +2 oxidation state increases with increasing atomic number in group 14.

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