Alkali metals have low ionisation energies. Explain.

Explain how ydrogen differs from alkali metals on the basis of ionisation energies.

Why do alkali metals have lowest ionisation energy?

Assertion : Alkali metals have least value of ionization energy within a period. Reason : They precede alkaline earth metals in periodic table.

Alkali and alkaline earth metals have low ionisation enthalpies and hence exhibit characteristic flame colouration. They have high negative electrode potentials and hence are strong reducing agents. They dissolve in liquid ammonia to give a solution which conducts electricity and act as strong reducing agent. being stronger reducing agent than hydrogen, they are usually prepared by the electrolysis of their fused chlorides. Their oxides are basic and the basic strength increases down the group. The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends. only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkaline earth metals on heating give carbonates. The compound insoluble in acetic acid is

First ionisation energy of alkali metals is very low but second ionisation energy is very high because

First ionisation energy of copper is higher than those of alkali metals, while second and third ionisation energies are lower. Explain.

The first ionisation energy of magnesium is greater than that of sodium, whereas the recerse is true for second ionisation energy. Explain.

In group IA of alkali metals, the ionisation potential decrease down the group,Therefore ,lithium is a poor reducing agent.

Which of the following s-block metals has the lowest first ionisation energy?