Electronegativity And Polarity

Define electronegativity and dipole moment.

The correct order of electronegativity is:

An atom with high electronegativity has

When the polarity of bond A-B is "D" expressed in Si units, the relationship between their Electronegativity difference is

Electron Affinity and its Variation || Electronegativity Scale to Measure Electronegativity

Is the electronegativity of an atom is constant ?