Question

3. Which statement best describes why Beryllium (Be), Magnesium (Mg), and Calcium (Ca) will exhibit similar

chemical properties?
A. The elements have the same number of neutrons in the nucleus.
B. The total number of electrons present in the elements are the same.
c. The total number of protons and neutrons in the elements are the same.
D. The elements have the same number of valence electrons in the outermost shell.

Answer 1

D. The elements have the same number of valence electrons in the outermost shell.

they are all in group 2 , alkali earth metals , so have 2 electrons in their outer shell :)