Question

What is `"electron affinity?"`

Answer 1

Do you mean `"electron affinity"`?

Explanation:

Electron affinity is the energy associated with the formation of 1 mole of gaseous negative ions from 1 moles of gaseous atoms, and 1 mole of electrons:

`M(g)+e^(-) rarr M^(-)(g)+Delta`

Electron affinities are certainly measurable, and can be used to create tables of electronegativity.