Why a large amount of energy is needed to remove an electron from a neutral gaseous neon atom than the energy needed to remove an electron from gaseous sodium atom?

The energy required to remove an electron from unipositive ion is called

The energy that is needed to remove an electron from the 1st Bohr orbit or Hydrogen atom is

The minimum energy required to remove an election from the outer most orbital of gaseous atom.

What is the energy which is used to remove an electron from its outer most orbit ?

It is easier to remove one electron from O than N because Nitrogen has

The amount of energy required to remove the electron from a Li^(+2) ion in its ground state is x times that of the amount of energy required to remove the electron from an H-atom in its ground state find .x.

If 13.6 ev energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n=2 is

By losing an electron a neutral sodium atom becomes: