Give the name of group-$2$ elements.

Sorel's cement is:

Which of the following statement$(s)$ is/are correct?
$(i)$ $LiNO_3$ and $Ba(NO_3)_2$ both will give $NO_2$ on heating.
$(ii)$ $BaSO_4$ is less soluble in water than $CaSO_4$.
$(iii)$ Alkaline earth metals do not dissolve in liquid ammonia.

The fluoride which is most soluble in water is

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

Which of the following has the highest basic nature?