The energy released while accepting an electron by a neutral atom

The energy released while accepting an electron by a neutral atom is called electron affinity.

the ability of an atom to gain an incoming electron

Electron affinity is the ability of an atom to gain an incoming electron.

The attraction of an atom for an electron

The attraction of an atom for an electron is called electron affinity.

the change in energy of a neutral atom () gaseous phasewhen an electron is added to the atom to form a negative ion

Electron affinity is the change in energy of a neutral atom (gaseous phase) when an electron is added to the atom to form a negative ion.

a change in energy

When an electron is added to a gaseous atom, a change in energy is observed called electron affinity.

the energy change that accompanies the addition of an electron

Electron affinity is the energy change that accompanies the addition of an electron.

the energy change that occurs when an electron is added to a gaseous atom to give an anion

The electron affinity (EA) of an element is the energy change that occurs when an electron is added to a gaseous atom to give an anion.

energy

Electron affinity is a real energy but electronegativity is an empirically derived parameter but electronegativity ’s not an energy.

to an isolated gaseous atom to form the negative ion (anion)

Electron affinity is the energy released when an electron is added to an isolated gaseous atom to form the negative ion (anion).

a measure of the energy change

The electron affinity is a measure of the energy change when an electron is added to a neutral atom to form a negative ion.

the amount of energy needed to release an electron

Electronegativity is how well the electrons are attracted to an atom, and electron affinity is the amount of energy needed to release an electron.

a measurable physical quantity, namely, the energy released or absorbed when an isolated gas-phase atom acquires an electron, measured in kJ/mol

The electron affinity of an element is a measurable physical quantity, namely, the energy released or absorbed when an isolated gas-phase atom acquires an electron, measured in kJ/mol.