Question

The element with highest ionization potential, is:
A. Hydrogen
B. Caesium
C. Radon
D. Helium​

Answer 1

The element with highest ionization potential is helium. (Option D)

• The amount of ionization potential increases if we move from left to right through a period of the periodic table. Which means,the noble gases have the highest ionization potential in the whole periodic table.

• The amount of ionization potential decreases of we move downwards through a group of the periodic table. Which means,the topmost element of the noble gas group has the highest amount of ionization potential.

• And,this topmost element of the noble gas group is helium.