Practice!

Sample Problem

Which of the following descriptions correctly characterize the properties of alkaline earth metals? (Choose all that apply)

Low second ionization energy

Not reactive

Tend to lose 2 valence electrons

Some of them react with water

Solution

Alkaline earth metals have low second ionization energy. They are not as reactive as alkali metals, but are still reactive. They tend to lose two valence electrons. Some of them react with water (Mg, Ca, Sr, and Ba).