EVERYDAY SCIENCE

Detailed explanation-1: -ionization energy, also called ionization potential, in chemistry and physics, the amount of energy required to remove an electron from an isolated atom or molecule.

Detailed explanation-2: -Ionization energy (IE) is the energy required to remove an electron from a neutral atom or cation in its gaseous phase. IE is also known as ionization potential. Conceptually, ionization energy is the affinity of an element for its outermost electron (an electron it already has in its valence shell).

Detailed explanation-3: -ionization energy. The energy necessary to overcome the attractions of electrons to the nucleus of an atom so as to remove electrons from the atom in the gas phase.

Detailed explanation-4: -The amount of energy necessary to remove an electron from an atom is a quantity called the ionization energy, Ei. This energy can be measured by a technique called photoelectron spectroscopy, in which light of wavelength l is directed at an atom, causing an electron to be ejected.

Detailed explanation-5: -The ionization energy is the quantity of energy that an isolated, gaseous atom in the ground electronic state must absorb to discharge an electron, resulting in a cation. H(g)→H+(g)+e− This energy is usually expressed in kJ/mol, or the amount of energy it takes for all the atoms in a mole to lose one electron each.