Group 1 Elements: Alkali Metals

Which of the follownig acids will not evolve${\mathrm{H}}_2$ gas on reaction with alkali metals?

The oxidation state of $\mathrm{K}$ in ${\mathrm{KO}}_2$ is $+1$.

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

Discuss the oxidation state(s) of alkali metals in their compounds.

Sublimation enthalpy increases down the group is alkali metals.

Which of the following trends decreases down the group in alkali metals?

Sublimation enthalpy _____ (increases/decreases) down the group is alkali metals.

Describe the reason for decrease in sublimation enthalpy down the group is alkali metals.

Explain the variation in ionization energy of alkali metals.

The ionization enthalpy of alkali metals is very low. Give reason?

Which on what a greater boiling point, lithium or sodium? Why?

Why alkaline earth metals have higher boiling point than alkali metals?

Which of the following alkali metal has highest melting point?

Explain the reason for the low boiling points of alkali metals.

Among the alkali metals, the metal with the highest ionization potential is:

Which of the following property is not a characteristic of alkali metals?

Which of the following elements has the maximum density?

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

In organic reactions, metallic lithium on liquid ammonia behaves as _____(reducing agent/oxidising agent).