Question

Electron gain enthalpy short note​

Answer 1

Electron gain enthalpy is defined as the amount of energy released when an electron is added to an isolated gaseous atom. ... During the addition of an electron, energy can either be released or absorbed.Electron gain enthalpy becomes more and more negative from left to right in a period. ... Hence, electron gain enthalpy becomes more and more negative in a period from left to right. Halogens have the most negative electron gain enthalpy.Electron gain enthalpy of Na+ is (-495.8) kj/mol.

Answer 2

Answer:

Electron gain enthalphy otherwise known as electron affinity is defined as the energy released when an electron is added to the valence shell of an isolated neutral gaseous atom in its ground state to form its anion.It is expressed in KJmol^-1