The ionization energy for hydrogen is 1312 kilojoules per mole. This is the same as the ionization potential and is the energy required to remove one electron from the atom. While other elements have more than one ioniza... More »

Calculating the ionization energy of atoms is a simple process that requires basic knowledge of the electron configuration arrived at through Koopman's theory. Ionization energy is the energy an electron takes to detach ... More »

An electron jump from the ground state to the ionized state absorbs the highest frequency photon. Such a jump is the largest that an electron can take, which takes it from the lowest level to being free of the hydrogen a... More » Science Chemistry Atoms & Molecules

The ionization energy of an element is the amount of energy needed to rip an electron from an atom in the gaseous state. The ionization energy increases going up and to the right of the periodic table. More »

The first ionization energy generally decreases down a group due to the increasing distance of the valence electrons from the nucleus of an atom. The increasing gap lowers the attractive force of the protons that pull th... More »

Second ionization energy is the energy needed to remove a second electron from an atom after one has already been removed. It always takes energy to remove electrons from atoms, although the amount of energy varies great... More »

Potassium is the element that has a first ionization energy of 418 kilojoules per mol. The first ionization energy refers to the amount of energy required to remove 1 electron from 1 mol of gaseous atoms. More »