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MHT CET · Chemistry · Coordination Compounds

Identify the formula of pentaaquaisothiocyanatoiron(III) ion from following.

  1. A \(\mathrm{Fe}\left[\left(\mathrm{H}_2 \mathrm{O}\right)_5(\mathrm{SCN})\right]^{3+}\)
  2. B \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5(\mathrm{NCS})\right]^{2+}\)
  3. C \(\mathrm{Fe}\left[\left(\mathrm{H}_2 \mathrm{O}\right)_3(\mathrm{NCS})_2\right]^{3+}\)
  4. D \(\left[\mathrm{Fe}\left[\left(\mathrm{H}_2 \mathrm{O}\right)_2(\mathrm{SCN})_3\right]^{5+}\right.\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5(\mathrm{NCS})\right]^{2+}\)

Step-by-step Solution

Detailed explanation

Metal ion: \(\mathrm{Fe^{3+}}\) Ligands: \(\text{pentaaqua } \left(\mathrm{H}_2 \mathrm{O}\right)_5\), \(\text{isothiocyanato } (\mathrm{NCS})\)