Give the hybridisation and shape of (i) `NO_(3)^(-) ion (ii) CO_(3) ^(2-)` ion.

Explanation

To determine the hybridization and shape of the nitrate ion (NO₃⁻) and the carbonate ion (CO₃²⁻), we can follow these steps:

### Step 1: Determine the Valence Electrons
- **For NO₃⁻:**
- Nitrogen (N) has 5 valence electrons.
- Each Oxygen (O) has 6 valence electrons, and there are three Oxygens contributing a total of 18 electrons.
- The negative charge (-1) indicates the addition of one electron.
- Total = 5 (N) + 18 (3 O) + 1 (charge) = 24 valence electrons.
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