Question

Magnesium has two valence electrons and lithium has one. Which element is more reactive?

Answer 1

Reactivity of an Element based on its Valence Electron

Valence Electron

• electrons found in the outermost shell of an element

Between Magnesium and Lithium, Lithium is more reactive since it has only 1 valence electron. This element is most likely to be the one who losses its electron when combining with another element.