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JEE Main20257 Apr 2025Morning ShiftChemistryd and f Block ElementsActual

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

Options

  1. A8
  2. B9
  3. C6
  4. D10

Correct answer

C. 6

Step-by-step solution

Out of Cr , Co , Fe and Ni Chromium has lowest heat of atomisation. Cr =[ Ar ] 3 ~d ^5 4 ~s ^1 Total six valence e ⁻ in Cr .

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