Name the following compound: [cr(h2o)4cl2]cl (iii) chloride (iii) chloride (ii) chloride (iv) chloride.

(III) chloride

Explanation:

Given,  

The complex : [Cr(H₂O)₄Cl₂]Cl

The oxidation number of Chromium is:

x +0 +2(-1) = +1

x = +3

The complex contains ligands  H₂O and chloride ion.

Cl⁻ is written as chloro and H₂O as aqua. H₂O is written first because aqua will come before chloro in the English alphabet.

4 molecules of H₂O are acting as ligands in the complex. So, written as: tetraaqua

2 molecules of Cl⁻ are acting as ligands in the complex. So, written as: dichloro

One chloride ion acts as a spectator anion.

The name of the complex is:

(III) chloride

i do not get it   at all