Question

The highest atomic number radioactive element in p-block elements is

• A. Pb
• B. Te
• C. Rn
• D. Po

Answer 1

Answer: (C)

The atomic numbers of $Pb,Te,Rn$ and Po are 82, 52, 86 and 84 respectively. Hence, radon (Rn) is radioactive element of the highest atomic number.