ALKALI EARTH METALS:
Alkali earth metals are lithium, sodium, potassium, rubidium, cesium, calcium, and francium.
Alkali earth metals react quickly with other elements, such as oxygen. Pure alkali metals
must be stored so that they do not come in contact with oxygen and water vapor in the air.
They also have similar physical properties, and the lowest densities of all metals.
Alkali earth metals are lithium, sodium, potassium, rubidium, cesium, calcium, and francium.
Alkali earth metals react quickly with other elements, such as oxygen. Pure alkali metals
must be stored so that they do not come in contact with oxygen and water vapor in the air.
They also have similar physical properties, and the lowest densities of all metals.