Chemical Properties of Group 1 Elements

When $\mathrm{Na}$ and $\mathrm{Li}$ placed in dry air we get :-

On allowing ammonia solution of s-block metals to stand for a long time, blue colour becomes fade. The reason is:-

Which of the following statement is/are false for alkali metals?

What happens when alkali metals react with compound containing acidic hydrogen?

Which hydride of alkali metals behave as strong reducing agents ?

Which of the following elements shows in the decreases of the stability of hydrides.

Assertion (A): $\mathrm{LiCl}$ and ${\mathrm{MgCl}}_2$ are soluble in ethanol
Reason (R) : Lithium and magnesium are harder than their respective group elements

The correct option among the following is

The oxidation number of $\mathrm{K}$ in ${\mathrm{KO}}_2$ is

What happened when sodium is treated with ethyl alcohol.

What happened when alkali metals are reacted with proton donors or acidic hydrogen?

The correct statements are
(I) The low solubility of $\mathrm{LiF}$ is due to its high lattice enthalphy
(II) $\mathrm{LiBr}$L is not soluble in acetone
(III) $\mathrm{LiCl}$ is soluble in pyridime
(IV) The order of melting points of alkali metal lalides is $\mathrm{MF}>\mathrm{MCl}>\mathrm{MBr}>\mathrm{MI}$

Which one of the following liberates oxygen on reacting with ${\mathrm{H}}_2\mathrm{O}$?

The correct order of stability of the following superoxides is

Potassium superoxides finds use in breathing equipment and safeguards the users to breath in oxygen generated internally in the apparatus without being exposed to toxic fumes out side. The supply of oxygen is due to :
$\mathrm{i})$ Slow decomposition of ${\mathrm{KO}}_2$
$\mathrm{ii})$ Reaction of superoxide with moisture in the exhaled air.
$\mathrm{iii})$ The reaction of ${\mathrm{KO}}_2$ with ${\mathrm{CO}}_2$ in the exhaled air.

The oxide of potassium that does not exist is

Which factor makes $\mathrm{Li}$ the strongest reducing agent in aqueous solution?

The reason due to which alkali metals react with proton donors such as gaseous ammonia, water, alcohol, etc., is?

Which gas will be released when alkali metals react with proton donors such as water, gaseous ammonia, etc?

Which of the following statements is not true about the solvated ions formed when sodium dissolves in liquid ammonia at low temperature ?