Which one of the following complex ion has the highest magnetic moment? — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Magnetic moment increases with the increase in the number of unpaired electron. In +3 3 6 [Cr(NH ) ] Cr is present in +3 oxidation state and will have 3 unpaired electrons. In 3- 6 [Fe(CN) ] one unpaired electron is present and in 4- +2 6 3 6 [Fe(CN) ] &[Zn(NH ) ] unpaired electrons is absent. Therefore +3 3 6 [Cr(NH ) ] has the highest magnetic moment. Hence, the correct option is (a).