Which of the following 3d-metal ion will give the lowest enthalpy of hydration ( ) when dissolved in water ? 2+ 2+ 2+ 2+ 2+ 2+ 2+ 2+ 2+ (A) Cr (B) Mn (C) Fe (D) Co

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Question

Which of the following 3d-metal ion will give the lowest enthalpy of hydration ( ) when dissolved in water ? 2+ 2+ 2+ 2+ 2+ 2+ 2+ 2+ 2+

(A) Cr
(B) Mn
(C) Fe
(D) Co

Prashant Kotian · Accepted Answer

Correct answer: B) MN. Hydration enthalpy order Co > Fe > Cr > Mn Therefore, Mn has lowest hydration enthalpy

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