Question

group 1 1 h 1.008 2 3 li 4 be select the correct answer. in the periodic table of elements, what do all of the elements in group 2 have in common? a. an atom of each element can hold up to eight electrons in its outer energy level. b. an atom of each element can hold up to six electrons in its outer energy level. c. each element is an alkaline earth metal.

Explanation:

In the periodic table, group 2 elements are known as alkaline - earth metals. They have 2 valence electrons. Option A is about elements in group 18 (noble gases) which can hold 8 electrons in the outer - energy level. Option B is not characteristic of group 2 elements.

Answer:

C. Each element is an alkaline earth metal.