The number of valence electrons present in the metal among Cr, Co, Fe and Ni which has the lowest enthalpy of atomisation is (A) 10 (B) 8 (C) 6 (D) 9

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Question

The number of valence electrons present in the metal among Cr, Co, Fe and Ni which has the lowest enthalpy of atomisation is

(A) 10
(B) 8
(C) 6
(D) 9

Prashant Kotian · Accepted Answer

Correct answer: C. Out of Cr, Co, Fe and Ni Chromium has lowest heat of atomisation Cr = [Ar]3d54s1  Total six valance electron in Cr.

💡 Solution & Explanation