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Q.

IUPAC name of $[Cr {(H_{2} O)}_{6}] {Cl}_{3}$ Complex is

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a

HexaaquaChromium(II)chloride

b

HexaaquaChromium(III)dichloride

c

HexaaquaChromium(III)chloride

d

HexaaquaChromium(III)trichloride

answer is A.

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Detailed Solution

First name the ligands and then metal with oxidation number (in roman numerals).
The oxidation number of chromium is (+3).
In the given compound, water is a neutral ligand and chloride contain -1 charge.
Therefore, the oxidation number of chromium is (+3).
Assign the number of ligands in a complex with a prefix, di for 2, tri for 3, tetra for 4, and so on.
Name the ligands in alphabetical order.
IUPAC name of $[Cr {(H_{2} O)}_{6}] {Cl}_{3}$ Complex is HexaaquaChromium(III)chloride

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IUPAC name of CrH2O6Cl3 Complex is