(a)
Interpretation: The oxidation number of phosphorous atom in the phosphorous acid is to be stated.
Concept introduction:
Oxidation number is also called oxidation state. The total number of electrons that an atom gain or loss to form a
Oxoacids are the acids containing oxygen atoms. Phosphorous is one element that forms a number of oxoacids. The phosphorous acid is an oxoacid of phosphorous atom.
(b)
Interpretation: To draw the structure of diphosphorous acid,
Concept introduction: In oxoacids of phosphorous, the phosphorous is tetrahedrally surrounded by other atoms. There are atleast one
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