Give two differences between valency and oxidation number.

Explanation

Difference between oxidation number and valency are as follows :
`{:("S.No.","Oxidation number","Valency"),((i),"It is the charge which appears on an atom","It is combining capacity of an element"),(,"when all other atoms are removed from it.","in terms of the number of hydrogen"),(,,"atom with which element may combine."),((ii),"It may not always be a whole number.","It is always a whole number."):}`