Question

Magnesium and calcium are in the same group on the periodic table.

sentence best explains why they have similar properties?
OA. They both have two valence electrons.
OB. They look alike.
OC. They have similar masses.
OD. They are both metals.

Answer 1

Answer: They both have two valence electrons.

Step-by-step explanation:

Atoms with the same number of valence electrons normally have similar properties.