Question

why do beryllium (be) and magnesium (mg) have similar properties? they are in the same group they are in the same period they have the same number of protons they have the same number of neutrons

Explanation:

Elements in the same group of the periodic table have the same number of valence electrons, which determines their chemical properties. Beryllium (Be) and magnesium (Mg) are in group 2 of the periodic table.

Answer:

They are in the same group