# What is the tendency of an atom to pull electrons toward itself referred to as?

You speak of the $\text{electron affinity}$, the enthalpy change when 1 mole of gaseous atoms combine with mole of electrons, to form one mole of gaseous anions..........
The $\text{electron affinity}$ refers to the enthalpy change of the following reaction:
$\text{Atom(g)" + e^(-) rarr "Anion(g)} + \Delta$