Predict the order of decreasing boiling points of the following `H_(2),He,Ne,Xe,CH_(4)` .

Explanation

To determine the order of decreasing boiling points for the substances \( H_2, He, Ne, Xe, CH_4 \), we need to consider the factors that influence boiling points, particularly the molar mass and the type of intermolecular forces present.

### Step-by-Step Solution:

1. **Identify the Substances and Their Molar Masses**:
- \( H_2 \) (Hydrogen): 2 g/mol
- \( He \) (Helium): 4 g/mol
- \( Ne \) (Neon): 10 g/mol
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