The least easily oxidized of the metals below is?
- Ca
- Na
-
Zn
- Al
The correct answer is: C
Explanation
The activity series is a type of ordering system for elements, which ranks how reactive a certain element is in relation to other elements.
The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper >
There is an explanation video available .