તત્વોની દરેક જોડીની અંદર અનુક્રમે \(F\;\)અને \(\;Cl\) , \(S\;\)અને \( \;Se\),અને \(Li\;\)અને \(\;Na\) છે,જ્યારે ઇલેક્ટ્રોન મેળવે ત્યારે વધુ ઊર્જા મુક્ત કરનારા તત્વો ........

A \(F, Se\) અને \(Na\)
B \(F, S\) અને \(Li\)
C \(Cl, S\) અને \(Li\)
D \(Cl, Se\) અને \(Na\)

Verified Solution

Answer & Solution

Correct Answer

(C) \(Cl, S\) અને \(Li\)

Step-by-step Solution

Detailed explanation

(i) Electron affinity of second period \(p-\)block element is less than third period \(p-\)block element due to small size of second period \(p-\)block element. \(E.A.\) order : \(F < Cl\) (ii) Down the group electron affinity decreases due to size increases. \(EA.\) order :…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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