Question

difference between alkali and alkaline earth metals

Answer 1

alkali earth metals have one electron in their outer layer
alkaline earth metals have two electron in their outer layer

Answer 2

by valencies;
All the alkali metals have an electrons in the outermost shell
All the alkaline earth metals have two outer electrons

To achieve the noble gas configuration,
* alkali metals needs to lose one electrons
*whereas alkaline earth metals need to remove two electrons

by reactivity;
both alkali and alkaline earth metals are reactive ,but alkali metals are more reactive than alkaline earth metals

by ionic charge,
Alkali metals have +1 ionic charge in their compounds and alkaline earth metals have +2 ionic charge in compounds.

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