Electronegativity is only defined for atoms, not for compounds.

With this limitation, the Mulliken electronegativity is defined as 0.5(IE+EA) in which IE stands for ionization energy and EA for electron affinity, both of the atomic species, not a bulk solid which would have bands.

electronegativity applies to Hydrogen and oxygen in their bonded state in H2O and not to pani

Hello

Actually there are different source on it but experimentally I have done it and you can do this experiment to gain VB and CB and after that calculate.

Sepideh Hossein Abadi

What do you mean by "a different source"? Electronegativity by all definitons (Mulliken, Allred-Rochow, Pauling) is always an atomic property.