Arrange the following molecules in increasing order of intermolecular forces : `C_(2)H_(6),CH_(3)NH_(2),CH_(3)F` and `CH_(2)F_(2)`

Explanation

To arrange the given molecules \( C_2H_6 \), \( CH_3NH_2 \), \( CH_3F \), and \( CH_2F_2 \) in increasing order of intermolecular forces, we need to analyze the types of intermolecular forces present in each molecule.

### Step 1: Identify the types of intermolecular forces

1. **\( C_2H_6 \) (Ethane)**: This molecule only exhibits London dispersion forces, which are the weakest type of intermolecular force.

2. **\( CH_3NH_2 \) (Methylamine)**: This molecule can form hydrogen bonds due to the presence of the -NH group. Hydrogen bonding is a stronger intermolecular force compared to London dispersion forces.

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