The set that contains atomic numbers of only transition elements, is? (A) 9, 17, 34, 38 (B) 21, 25, 42, 72 (C) 37, 42, 50, 64 (D) 21, 32, 53, 64

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Question

The set that contains atomic numbers of only transition elements, is?

(A) 9, 17, 34, 38
(B) 21, 25, 42, 72
(C) 37, 42, 50, 64
(D) 21, 32, 53, 64

Prashant Kotian · Accepted Answer

Correct answer: B) 21, 25, 42, 72. Transition elements = 21 to 30 30 to 48 57 & 72 to 80 Ans. 21, 25, 42 & 72

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