Q2 / 150 · MHT CET 2020 (14 Oct Shift 1) · Chemistry

Which among the following complexes is a heteroleptic and cationic in nature?

  • A
    $\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]$
  • Correct answer
    B
    $\left.\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right)\right] \mathrm{Cl}$
  • C
    $\left.\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{2}\right)\right]$
  • D
    $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$

Solution

$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{Cl} \longrightarrow\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{+}+\mathrm{Cl}^{-}$

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

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