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Q.
The $IUPAC$ name of the complex $\left[ CrCl _{2}\left( H _{2} O \right)_{4}\right] NO _{3}$ is:
Coordination Compounds
Solution:
The correct I.U.P.A.C. name for $\left[ CrCl _{2}\left( H _{2} O \right)_{4}\right] NO _{3}$ complex is tetraaquadichlorochromium(III) nitrate.
In this complex, water (aqua) is neutral ligand. $NO _{3}$ and $Cl$ has $-1$ charge. The oxidation state of chromium in this complex will be $+3$. Oxidation state is written in roman letters within the brackets. Nitrate ion is present outside the sphere so it will be named after naming the complex.