Both $Be$ and $Al$ become passive on reaction with conc. nitric acid due to :

Which of the following alkaline earth metal hydroxides is the least soluble in water?

Give a brief explanation of the carbonate,sulphate,and nitrate compounds of alkaline earth metal elements.

Which of the following is the correct order of basic strength?

Among the following alkaline earth metal halides,the one which is covalent and soluble in organic solvents is:

$A$ compound $X$ on heating gives a colourless gas. The residue is dissolved in water to obtain $Y$. Excess $CO_2$ is bubbled through the aqueous solution of $Y$ and $Z$ is formed. $Z$ on gentle heating gives back $X$. The compound $X$ is: