5 posts • Page 1 of 1
ionization energy increases across a period and decreases down a group, so if you look at the periodic table it is clear that helium is the element that has the highest first ionization energy
Ionization energy is defined as the energy needed to remove an electron from an atom in the gas phase. Ionization energy increases across a period and decreases down a group. For this reason, He has the highest first ionization energy.
Who is online
Users browsing this forum: No registered users and 1 guest