Q20 / 225 · JEE Main 2003 · Chemistry

The number of d-electrons retained in $\mathrm{Fe}^{2+}$ (At.no.of $\mathrm{Fe}=26$ ) ion is

  • A
    4
  • B
    5
  • Correct answer
    C
    6
  • D
    3

Solution

$\mathrm{Fe}^{+2}=3 \mathrm{~d}^6 \cdot 4 \mathrm{~s}^0$

Hence, the correct answer is option: 'C'.

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