Incorrect order of radius is : — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

In (a) and (b) use (z / e) concept for isoelectronic specie. In (c) size of neutral atom is greater than its cation. In (d) Se2- and As3- related with 4th period, while Ba2+ and Cs+ related with 6th period. (These are not isoelectronic species.)