Question: The size of the iso-electronic species $\mathrm{Cl}^{-}, \mathrm{Ar}$ and $\mathrm{Ca}^{2+}$ is affected by :
azimulthal quantum number of valence shell
electron-electron interaction in the outer orbitals
principal quantum number of valence shell
nuclear charge
Correct Option: , 4
Solution:
Iso-electronic species differ in size due to different effective nuclear charge.
