First ionization energy is the lowest with : — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Step 1: Recall that representative elements comprise s-block and p-block elements (excluding noble gases). Step 2: Tellurium (Group 16), Thallium (Group 13), and Astatine (Group 17) are p-block representative elements. Tantalum (Z=73) is a d-block transition element. Step 3: Therefore, Tantalum is not a representative element, corresponding to option (b).