Arrange `H_(2)O,NH_(3)` and `CH_(4)` molecules in decreasing order of bond angle.

Explanation

To arrange the molecules \( H_2O \), \( NH_3 \), and \( CH_4 \) in decreasing order of bond angle, we can follow these steps:

### Step 1: Identify the molecular geometries
- **\( H_2O \)** (Water) has a bent molecular geometry.
- **\( NH_3 \)** (Ammonia) has a trigonal pyramidal molecular geometry.
- **\( CH_4 \)** (Methane) has a tetrahedral molecular geometry.

### Step 2: Determine the bond angles
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