Question

Assign oxidation number to each atom
in the following species.
a. Cr(OH4)-, b. Na2S2O3
c. H3BO3​

Answer 1

Answer:

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Answer 2

Explanation:

Cr+3(O-2H+1)4^-

Element: Cr ( O H )

Oxidation number: +3 -2 +1

Na+12S+22O-23

Element: Na S O

Oxidation number: +1 +2 -2

H+13B+3O-23

Element: H B O

Oxidation number: +1 +3 -2