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प्रश्न
Calculate the oxidation number of the underlined atom.
H3PO3
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उत्तर
H3PO3
Oxidation number of O = –2
Oxidation number of H = +1
H3PO3 is a neutral molecule.
∴ Sum of the oxidation numbers of all atoms = 0
∴ 3 × (Oxidation number of H) + (Oxidation number of P) + 3 × (Oxidation number of O) = 0
∴ 3 × (+1) + (Oxidation number of P) + 3 × (–2) = 0
∴ Oxidation number of P + 3 – 6 = 0
∴ Oxidation number of P is H3PO3 = +3
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