Which of the following electronic configuration is associated with the highest stable oxidation stat — d and f Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: In the first transition series (3d), chromium (Cr) has the maximum melting point due to its half-filled d-subshell (3d5 4s1) with maximum unpaired electrons contributing to strong metallic bonding. Step 2: Zinc (Zn) represents the minimum melting point of the first transition series (419°C), while cadmium (Cd) represents the minimum melting point of the second (4d) transition series (321°C). Step 3: Therefore, the maximum of the first series (Cr) and minimum of the second series (Cd) are matched in option (c).