Which of the following arrangements show...

Which of the following arrangements shows the correct order of increasing stability?

A

`C^(2+) lt Ge^(2+) lt Sn^(2+) lt Pb^(2+)`

B

`Ge^(2+) lt C^(2+) lt Sn^(2+) lt Pb^(2+)`

C

`Sn^(2+) lt C^(2+) lt Ge^(2+) lt Pb^(2+)`

D

`Pb^(2+) lt Ge^(2+) lt C^(2+) lt Sn^(2+)`

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The correct Answer is:

A

Due to inert pair effect lower oxidation states are more stable in 15, 16, 17 group down the group

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