explain electronegativity and electron gain enthalpy which of the two can be measured experimentally
Answers
Electronegativity: Electronegativity is a chemical property of an atom due to which an atom wants to attract the bond pair electrons towards itself.
On the other hand,
Electron gain enthalpy: Electron gain enthalpy is a physical measurement of energy which is released from an electron during the addition of an electron is an atom.
Among these two properties, we can measure the electron gain enthalpy with the unit of KJ/mole.
Answer:
(1) Electronegativity is the ability of an atom in a compound to attract shared electrons of a covalent bond to itslef.
Electron gain enthalpy is the change in the enthalpy accompanying the addition of an electron to gaseous neutral atom forming a gaseous anion.
(2) Electronegativity of any given element is not constant, but depdnds upon the other element to which is bound in a compound. Electron gain enthalpy of an element is constant.
(3) Electronegativity cannot be measured experimentally. It is obtained from numerical scale of electronegativity developed mainly by Linus Pauling Electron gain enthalpy is a measurable property