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Periodic Table and Periodicity question

2025 · 7 Apr · Shift 1 · Q8
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  5. /2025 · 7 Apr · Shift 1 · Q8

Periodic Table and Periodicity question

2025 · 7 Apr · Shift 1 · Q8

JEE MainChemistryPeriodic Table and PeriodicityMCQ+4 / −1
The number of valence electrons present in the metal among Cr,Co,Fe\mathrm{Cr}, \mathrm{Co}, \mathrm{Fe}Cr,Co,Fe and Ni which has the lowest enthalpy of atomisation is :
  1. A
    10
  2. B
    6
  3. C
    9
  4. D
    8
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