Question

The elements of group - 2 are called alkaline earth metals because

• A. these are $s-$ block elements
• B. they occur in earth's crust and form alkaline salts
• C. their oxides are alkaline and occur in earth's crust
• D. they are alkaline in nature

Answer 1

The correct option is C their oxides are alkaline and occur in earth's crust

The elements of group - 2 are called alkaline earth metals because because their oxides and hydroxides are alkaline in nature and these metal oxides are found in the earth’s crust. Hence, the correct answer is option (c).