Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

3. Electron neutrality

Explanation:

Factors affecting ionisation potential,

Atomic size: Larger the atomic size, smaller is the Ionisation Potential. It is due to that the size of atom increases the outermost electrons farther away from the nucleus and nucleus loses the attraction on that electrons and hence can be easily removed.

Effective nuclear charge ( Z eff ): Ionisation potential increases with the increase in nuclear charge between outermost electrons and nucleus.

Screening effect: Higher is the screening effect on the outer electrons causes less attraction from the nucleus and can be easily removed, which is leading to the lower value of Ionisation potential.

Penetration power of subshells and stability of half-filled and fully filled orbitals.