Concept explainers
Interpretation:
The oxidation number of alkali and alkaline earth metals in their compounds is to be defined.
Concept introduction:
Oxidation number: It is defined as charge the atom would have if electrons are not shared but transfer completely.

Answer to Problem 37A
Oxidation number of alkali metals in their compounds=+1
Oxidation number of alkaline earth metals in their compounds=+2
Explanation of Solution
Every atom involved in
There are some rules to assign oxidation number:
- For an atom in its elemental form, oxidation number=0
- For a monatomic ion, oxidation number=charge of ion
- The sum of oxidation number value for the atoms in a molecule equal to zero for neutral compound and equal to total charge if it is a polyatomic ion
- For group (I)A, oxidation number=+1 in all compounds
- For group (II)A, oxidation number=+2 in all compounds
- For fluorine, oxidation number=-1 in all compounds
Therefore alkali metals have oxidation number of +1 and alkaline earth metals of +2 in their compounds
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