Question

elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?
o how many protons and neutrons they have
o which chemical properties they have
o how many total electrons they have
o which period they are most often found in

Explanation:

Elements in the same group of the periodic table have similar chemical properties because they have the same number of valence electrons. Alkaline - earth metals in group 2 all have 2 valence electrons, leading to similar chemical behavior.

Answer:

which chemical properties they have