Question

The oxidation state of B in H 3 BO3 is D.+6 C.-6 B. +3 A.-3

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Answer 1

Answer:

The oxidation number of each atom of \times\B are" + 1(H), + 3(B) and - 2(O)". Hence, oxidation number of each atom of B are" + 1(H), + 3(B) and - 2(O)"

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Answer 2

Answer:

Oxidation state of P in H3PO4 is 5 and oxidation state of P in H3PO3 is 3 ( taking oxidation state of oxygen is -2 and hydrogen +1). So sum is 5+3=8.