Q42 / 150 · MHT CET 2020 (12 Oct Shift 1) · Chemistry

What is effective atomic number of Fe in $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ (At. no. of $\mathrm{Fe}=26$ )

  • A
    34
  • B
    26
  • Correct answer
    C
    36
  • D
    35

Solution

$\mathrm{Z}=26, \mathrm{X}=2, \mathrm{Y}=12$ $\mathrm{EAN}=\mathrm{Z}-\mathrm{X}+\mathrm{Y}=26-2+12=36$

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

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