Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?
A)H, Li
B)Cs, Ba
C)Ca, Sr
D)Ga, Ge
E)C, O

Question

Quizplus · Accepted Answer

Ca (Calcium) and Sr (Strontium) are both in Group 2 of the periodic table, known as the alkaline earth metals. Elements in the same group have similar physical and chemical properties because they have the same number of electrons in their outer shell, leading to similar reactivity patterns.

Which Pair of Elements Would You Expect to Exhibit the Greatest