The electron affinity value are negative for : A. Be Be– B. N N– C. O O2– D. Na Na– E. Al Al– Choose the most appropriate answer from the options given below : (A) D and E only (B) A, B, D and E only

Question

The electron affinity value are negative for : A. Be Be– B. N N– C. O O2– D. Na Na– E. Al Al– Choose the most appropriate answer from the options given below :

(A) D and E only
(B) A, B, D and E only
(C) A and D only
(D) A, B and C only Allen Ans. (4)

Prashant Kotian · Accepted Answer

Correct answer: D. (A) Be + e–  Be– , E.A = –ive (B) N + e–  N– E.A = –ive (C) O + e–  O– O– + e–  O–2 E.A = –ive (D) Na + e–  Na– E.A = +ive (E) A + e–  A– E.A = +ive Ans. A,B and C only

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