Question

Some rules related to oxidation number are given below. Correct the mistakes.

• Oxidation number of alkali metals and alkaline earth metals is +2.
• Oxidation number of hydrogen is always +1. 
• Algebraicsum of oxidation number of all the atoms in an ion is not equal to the charge on the ion.

Answer 1

• Oxidation number of alkali metals is +1. 
• Oxidation number of alkaline earth metals is +2. 
• Oxidation number of H is +1 except in metallic hydrides.