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Q.

If X is a member of chalcogen family, the highest stability of X2- is exhibited by

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a

Oxygen

b

Selenium

c

Tellurium

d

Sulphur

answer is A.

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Detailed Solution

Oxygen has small size and high electron affinity.

Other members of the family have vacant d-orbital, larger size and lower electron affinity than oxygen.

Thus, If X is a member of chalcogen family, the highest stability of X2- is exhibited by oxygen.

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