What is oxidation number of cr
in K3 [Cr(ox)3]
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The coordination number for Cr is 6, oxidation state for Cr is 3+, potassium is 1+, and C2O4 is -2. Using valence bond theory, the e configuration of Cr3+ is [Ar] 3d3. Even though oxalate ion is a strong field ligand, the 3 electrons singly occupy the 3 suborbital of 3d leaving two unoccupied orbital
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