Q.The coordination number and oxidation state of $Cr$ in $[Cr(C_2O_4)_3]^{3-}$ are respectively:

3

and

+3

6

and

+3

6

and

+6

3

and

+6

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Q.The coordination number and oxidation state of CrCrCr in [Cr(C2O4)3]3−[Cr(C_2O_4)_3]^{3-}[Cr(C2​O4​)3​]3− are respectively: