Question

U Resource tion 3 of 8 > Arrange these ions according to ionic radius. Largest radius Ca2+ CI Smallest radius Answer Bank

Answer 1

All of them are isoelectronic

the one with greater atomic number has greater number of protons and hence nuclear force is more and hence it will be smaller

So, greater atomic number implies smaller radius

Order of atomic number is:

P < S < Cl < K < Ca

So, order of radius is:

P3- > S2- > Cl- > K+ > Ca2+

Answer:

P3-

S2-

Cl-

K+

Ca2+