Why NH3 has a higher boiling point than CH4 and HCl?

Why NH3 has a higher boiling point than CH4 and HCl?
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Both NH3 and HCl exhibit hydrogen bonding as intermolecularforces, whereas CH4 does not. This makes CH4 have a lower boilingpoint. Since there are 3 hydrogen atoms in NH3 and only 1 inHCl(g), the intermolecular forces would be expected to be greaterin NH3 than in HCl.
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