Question

Which element is the easiest to ionize,oxidize ??

Answer 1

Alkali metals (lithium, sodium, potassium...) and alkali earth metals (magnesium, calcium, strontium...) are easily oxidized. So are most of the lanthanide (cerium, europium, etc.) and actinide metals (uranium, plutonium, thorium, etc.), as well as a few of the transition metals (eg. iron, zinc, manganese, titanium). Finally, some nonmetals like phosphorus and sulfur also oxidize easily.

Answer 2

Sodium and magnesium mostly. ..... ....