Write the formula of an oxo-anion of Chromium (Cr) in which it shows t – InterviewSolution

1.	Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number.
Answer» Cr₂O₇^2-/CrO₄^2-/K₂Cr₂O₇/K₂CrO_4.

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