Which of the following is incorrectly matched?<br>Complex : Number of unpaired electrons — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Step 1: Count the unpaired d-electrons in each transition metal complex using Crystal Field Theory (CFT). Step 2: In [Co(NH3)6]^3+, Cobalt exists as Co^3+ with a 3d^6 configuration. Under the influence of the strong-field NH3 ligand, it pairs completely to form a low-spin t_2g^6 e_g^0 configuration. Step 3: Since this configuration has exactly 0 unpaired electrons, matching it with 4 unpaired electrons is incorrect, which corresponds to option (c).