Question

in H3ASO3 what is the oxidation number for Hydrogen and Oxygen?

Answer 1

$\sf H_3ASO_3 \: \: (arsenious \: acid)$

$\orange{\sf oxidtion \: no. \: hydrogen = + 1}$

$\red{ \sf oxidtion \: no. \: oxygen = - 2}$

$\blue{ \sf oxidtion \: no. \: arsenic = + 3}$

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