# In terms of the movement of electrons, what are "oxidizing" and "reducing agents"?

An $\text{oxidizing agent}$ accepts electrons..........
.......And a $\text{reducing agent}$ donates electrons.
$\text{A priori}$, without knowing ANYTHING about reaction chemistry or electronic structure, we would predict that $C {e}^{4 +}$ should be a better oxidant than is $S {n}^{2 +}$. Why?