How many of the following compounds are diamagnetic and coloured?
`K_(2)MnO_(4), Cu_(2)Cl_(2),Hg_(2)I_(2),Ag_(2)S,HgI_(2),K_(2)CrO_(4),Cr_(2)O_(3),AgCl,Ag_(2)O,CuSO_(4),HgS,AgF,CrO_(5),Mn_(2)O_(7),MnO_(2)`

Explanation

To determine how many of the given compounds are diamagnetic and colored, we need to analyze each compound based on its electronic configuration, oxidation state, and the presence of unpaired electrons.

### Step-by-Step Solution:

1. **Identify the Compounds**:
We have the following compounds to analyze:
- K₂MnO₄
- Cu₂Cl₂
...