Thermal decomposition of zinc nitrate gives:

Which element from the following exhibits a diagonal relationship with beryllium $(Be)$?

The compound $A$ on heating gives a colourless gas and a residue that is dissolved in water to obtain $B$. Excess of $CO_2$ is bubbled through aqueous solution of $B$,$C$ is formed which is recovered in the solid form. Solid $C$ on gentle heating gives back $A$. The compound $A$ is:

Explain the chemical properties of alkaline earth metals (Group $2$) in detail.

Which of the following statements is $\text{Incorrect}$:

Which of the following ions forms a hydroxide that is readily soluble in water?