Question

4. Rearrange the following atoms/ions in decreasing order of radius:
(a) Cl, Mg, Ca, Ba : _________________________
(b) Al3+, Mg2+, Ca2+, F, O2− : ________________________
(c) Pb, Sn , Si, As : _________________________
5. Write down the set of isoelectronic ions (4 each) that have the same ion configuration as the noble gas.
(a) [Ne] _____,______,______,
(b) [Ar] _____,______,______,