Question

Which element have highest ionization potential?

Answer 1

Ionization potential:

• Removing one electron from the valence shell of an isolated gaseous atom using some amount of energy is known as the ionization potential.
• The outermost shell is the valence shell. Mono-positive cation is formed when a neutral atom loses an electron.

Highest ionization potential

• In a period, ionization energy increases from left to right and drops from top to bottom.
• As a result, an inert gas has the largest ionization energy.
• The ionization potential increases from left to right over time and is greatest for noble gases.
• This is due to their stable electronic configuration which necessitates a significant amount of energy to escape the attraction force.
• Hence, the highest ionization energy is for Helium$\left(1s^2\right)$ whereas the lowest ionization is for francium.
• The element with the greatest ionization energy will also have the greatest effective nuclear energy.