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Question

What is the oxidation state of phosphorus in hypophosphoric acid?

A
+2
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B
+1
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C
+3
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D
+4
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Solution

The correct option is D +4
Hypophosphoric acid, represented chemically as H4P2O6, is an oxoacid of phosphorus. The oxidation state of phosphorus in hypophosphoric acid is +4. The two phosphorus atoms in total form 4 single bonds with OH group, two double bonds with oxygen and one single bond between the two phosphorus atoms.

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