JEE MAIN - Chemistry (2019 - 8th April Morning Slot - No. 6)
The size of the iso-electronic species Cl–, Ar and Ca2+ is affected by :
electron-electron interaction in the outer orbitals
Principal quantum number of valence shell
nuclear charge
azimuthal quantum number of valence shell
Explanation
| Cl- | Ar | Ca+2 | |
|---|---|---|---|
| Protons | 17 | 18 | 20 |
| Electrons | 18 | 18 | 18 |
Nuclear charge means number of protons present in the nucleus. Here maximum number of protons present in the Ca+2 ion, so the attraction towards those 18 electrons wll be most by the nucleus of the Ca+2 ion. That is why size of the Ca+2 ion wll be least because of highest nuclear charge.
Comments (0)
