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MHT CET · Chemistry · Coordination Compounds

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

  1. A \(\left[\mathrm{CoCl}_{2}(\mathrm{en})_{2}\right] \mathrm{Cl}\)
  2. B \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{3}\)
  3. C \(\mathrm{K}\left[\mathrm{Ag}(\mathrm{CN})_{2}\right]\)
  4. D \(\left[\mathrm{F}_{\mathrm{e}}(\mathrm{CO})_{5}\right]\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{3}\)

Step-by-step Solution

Detailed explanation

\(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{3} \rightleftharpoons\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}+3 \mathrm{Cl}^{-}\)
i. Homoleptic - \(\mathrm{Fe}\) is linked to only one type of ligand, \(\mathrm{H}_{2} \mathrm{O}\).
ii. Cationic Complex - due to positive charge on complex ion.