# Do metals have low ionization energies?

Jul 6, 2018

Metals are typically REDUCING materials, and the data reflect this. And metals come from the left hand side of the Periodic Table as we face it...with LARGER atomic radii, so that the nuclear charge, i.e. $Z$, is not so effective at retaining the valence electrons. And as to a metric that illustrates we can examine ionization energies...i.e. the enthalpy for the reaction...
$M \left(g\right) + \Delta \rightarrow {M}^{+} \left(g\right) + {e}^{-}$