As the alkaline earth metals (except $Be$) tend to lose their valence electrons readily,they act as:

Which one of the alkaline earth metal carbonates is thermally the most stable?
$MgCO_{3}, CaCO_{3}, SrCO_{3}, BaCO_{3}$

Chemical $A$ is used for the removal of temporary hardness of water. Compound $A$ reacts with $Na_2CO_3$ to produce caustic soda. When $CO_2$ gas is passed through $A$,it turns milky. What is the chemical formula of $A$?

Identify the correct statements with respect to compounds of Beryllium:
$I$. Beryllium oxide is amphoteric in nature.
$II$. Beryllium hydride is formed by the reaction of beryllium with hydrogen.
$III$. Beryllium hydride is formed by the reaction of beryllium chloride with lithium aluminium hydride.
$IV$. Beryllium sulphate is the least soluble sulphate among the sulphates of alkaline earth metals.

Which of the following hydroxides is insoluble in water?

The correct order of density for the alkaline earth metals is: