# How do activity series relate to how easily a metal is oxidized?

##### 1 Answer
Jan 12, 2016

I believe you are referring to "reactivity series".
Going down the series, it is harder to oxidize.

#### Explanation:

Sodium (at top of reactivity series) gets easily oxidized to ${\text{Na}}^{+}$, while gold (at bottom of reactivity series) remains inert as Au.