How are parentheses used in the formula [Cr(en)₃]Cl₃? - COORDINATION COMPOUNDS Quiz | GKFix.in

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Question

How are parentheses used in the formula [Cr(en)₃]Cl₃?

A. To show charge
B. To group Cl atoms
C. To enclose the 'en' ligand
D. To indicate oxidation state

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