Question

The complex that has highest crystal field splitting energy (Δ) is ______.

विकल्प

• \[\ce{[Co(NH3)5 (H2O)]Cl3}\]

• \[\ce{K2[CoCl4]}\]

• \[\ce{[Co(NH3)5Cl]Cl2}\]

• \[\ce{K3[Co(CN)6]}\]

Answer 1

The complex that has highest crystal field splitting energy (Δ) is \[\underline{\ce{K3[Co(CN)6]}}\].

Explanation:

In the case of a similar metal atom or ion, the value of coordination number and the strength of the ligands determine the value of crystal field splitting energy. Strength of ligands: \[\ce{CN- > NH3 > HiO > Cl-}\]

∴ \[\ce{K3[Co(CN)6]}\] has the highest crystal field splitting energy.