1.

Assertion: Formation of Cl^(-) ion is exothermic wheres O^(2-) ion formation is endothermic. Reason: EA_(2) of oxygen is endothermic and greater than its exothermic EA_(1) value of oxygen.

Answer»

If both ASSERTION and REASON are TRUE ANND the reason is the correct EXPLANATION of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but the reason is false
if assertion is false but the reason is true

Answer :A


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