Question

Name this compound k2(Au(en)3)

Answer 1

potassium Tris(ethylene-diamine)Aurate(||)

Answer 2

Complex compound K₂[Au(en)₃]

Explanation:

• This given compound is a coordination compound. Naming of a coordination compound can be done in the following ways.
• Firstly identity the complex ion present in coordination compound is anionic or cations. Here, complex ion is anionic with -2 charge.
• Name the coordinated group of atoms first in alphabetical order then metal ion or atom. Here, coordinated group is en which is a neutral atom. So, common of en is using i.e. ethylenediammine
• To denote the number of each type of coordinated group some Greek prefixes are used. example- di, tri, tetra. If group already contain these Greek prefix then bis, tris etc. are used. Here, tris is used to denote 3 en group.
• Now, for the naming of metal ion, if complex ion is an anionic the name of name of metal ion ends with the suffix -ate. Here complex ion is an anionic, So metal ion Au name will be aurate followed by the oxidation state of metal ion.

So, compound K₂[Au(en)₃] name is                                                    potassium Tris(ethylenediammine)aurate(II).