The sum of oxidation numbers fo all the atoms in the dichromate ion is

1.	The sum of oxidation numbers fo all the atoms in the dichromate ion is .A. `-3`B. `-1`C. `-4`D. `-2`
Answer» Correct Answer - D Dichromate ion is `Cr_2O_7^(2-)`. In a polyatomic ion, the sum of oxidation numbers fo all the atoms in the ion must be equal to the net charge fo the ion. However, in a neutral molecule , the sum of the oxidation numbers of all the atoms must be zero.

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The sum of oxidation numbers fo all the atoms in the dichromate ion is .A. `-3`B. `-1`C. `-4`D. `-2`

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