s-Block Elements · Chemistry · TS EAMCET

Consider the following reactions.

$$ \begin{array}{r} \mathrm{Cs}+\mathrm{O}_2 \text { (excess) } \rightarrow X \\ \mathrm{Na}+\mathrm{O}_2 \rightarrow Y \end{array} $$

Identify the correct Statement about $X$ and $Y$

Choose the correct statement from the following.

I. In vapour phase $\mathrm{BeCl}_2$ exists as chlorobridge dimer.

II. $\mathrm{BeSO}_4$ is readily soluble in water.

III. BeO is completely basic in nature.

IV. $\mathrm{BeCO}_3$ being unstable, is kept in the atmosphere of $\mathrm{CO}_2$.

V. $\mathrm{BeCO}_3$ is less soluble among all the carbonates of group 2 elements.

Assertion (A) $\mathrm{MgO}, \mathrm{CaO}, \mathrm{SrO}$ and BaO are insoluble in water.

Reason ( R ) In aqueous medium the basic strength of $\mathrm{MgO}, \mathrm{CaO}, \mathrm{SrO}$ and BaO increases with increase in the atomic number of metal.

The correct option among the following is

Which of the following set of metals have strong tendency to form super oxides?

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 sulpahte is the least soluble sulphate among the sulphates of alkaline earth metals.