A green complex, `K_(2)[Cr(NO)(NH_(3))(CN)_(4)]` is paramagnetic and has `mu_(eff)=1.73 BM` . Write the IUPAC name of the complex and draw the structure of anion and find out the the hybridisation of metal ion.

Explanation

To solve the problem step by step, we will break down the tasks as follows:

### Step 1: Write the IUPAC Name of the Complex

1. **Identify the cation and anion**:
- The cation is \( K^+ \) (potassium).
- The anion is \( [Cr(NO)(NH_3)(CN)_4]^{2-} \).

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