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Q.

The relative stability of +2 oxidation state of G-14 elements follows the order

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a

Si < Ge < Sn < Pb

b

Sn < Ge < Si < Pb

c

Pb < Sn < Ge < Si

d

Ge < Si < Sn < Pb

answer is C.

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Detailed Solution

${Tl}^{+ 1} and {Pb}^{+ 2}$ O.S’s are stable due to inert pair effect shown by $6 {s^{2}}^{-} s$ in Tl and Pb

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