Write mathematical equation to calculate electronegativity by mulliken method.
Answers
Answer:-
To find the Ionization and Electron Affinity values of an atom, one must reference a chart. In the Mulliken Electronegativity Equation, Ei stands for Ionization Energy and Eea stands for Electron Affinity. Plug in your values and solve.
Equation for Energies in Kilojoules/Mole :
ENMulliken = (1.97×10^−3)(Ei+Eea) + 0.19
Equation for Energies in Electronvolts :
ENMulliken = 0.187(Ei+Eea) + 0.17
Lithium Example in kJ/mol :
The Ionization Energy for Lithium is 520 kJ/mol
The Electron Affinity for Lithium is 60 kJ mol^-1
ENMulliken = (1.97×10^−3)(Ei+Eea) + 0.19
ENMulliken = (1.97×10^−3)(520 + 60) + 0.19
ENMulliken = 1.143 + 0.19 = 1.333
NOTE : There are multiple scales for measuring Electronegativity, including the Pauling Scale, Sanderson, Allen, and more. This example measures Electronegativity using the Mulliken scale, and will compute an answer that will differ from other models.
Answer:
This is done by dividing the Mulliken electronegativity value by 2.8. In other words (IE + EA)/2x2. 8 or (IE + EA)/5.6 yield E.N values in Pauling Scale.