Solution of \( \mathrm{AsO}_{4}^{3-} \) ion containing considerable excess of \( \mathrm{HNO}_{3...

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Solution of \( \mathrm{AsO}_{4}^{3-} \) ion containing considerable excess of \( \mathrm{HNO}_{3} \) on boiling with Ammonium molybdate test gives a yellow crystalline precipitate \( (X) \). Number of oxygen atom present in per molecule of precipitated \( (\mathrm{X}) \) are :
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