Question

Barium is an element in group 2, period 6 of the periodic table. What does this indicate about its properties? (1 point) It has 6 valence electrons and is soft and crumbly It has 2 valence electrons and is a non-reactive gas. It has 2 valence electrons and is highly reactive. It has 6 valence electrons and is a semimetal

Answer 1

Barium is an element in group 2, which indicates that it has 2 valence electrons. Since it is also in period 6, it is classified as an alkaline earth metal. Alkaline earth metals are known for being highly reactive, especially with water and acids.

Therefore, the correct statement about barium's properties is: It has 2 valence electrons and is highly reactive.