Question

Give reasons.
a. Alkali metals have low ionization
enthalnies​

Answer 1

Answer:

The atomic size of alkali metal atom is big. So, the outermost electron is far away from the positively chraged nucleus. The valence shell electron can be easily removed as the attractive force experienced by the valence electron is very low. Hence, alkali metals have low ionisation enthalpy

Explanation:

This is your answers

Answer 2

Answer:

The valence electrons in alkali metals, are very away from the nucleus. They can easily lose electrons with low energy and become cationic. Hence, they have low ionization energy.