Which of the following alternatives gives the formulas for the following polyatomic ions: peroxide, oxalate, carbonate and dichromate, in the correct order?

Question

Answer

O 2- , C 2 O 4 2- , CO 3 2-  and Cr 2 O 7 2-

Answer

O 2 - , C 2 O 4 2- , CO 3 2-  and CrO 7 2-

Answer

O 2 2- , C 2 O 4 2- , CO 3 2-  and CrO 3 -

Answer

O 2 2- , C 2 O 4 2- , CO 3 2-  and Cr 2 O 7 2-

Answer

O 2 2- , C 2 O 4 2- , CO 3 2-  and Cr 2 O 4 2-

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Which of the following alternatives gives the formulas for the following polyato...

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