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Recognised as Chemical formula

NH3

  • Ammonia
  • Formula
  • 17.031 g/mol
  • 4 atoms

NH3 is ammonia. It has a molar mass of 17.031 g/mol, made up of 4 atoms across 2 elements: 1 × N, 3 × H.

Molar mass

Molar mass17.031 g/mol
Total atoms per molecule4
Distinct elements2
Mass of one molecule2.8280641 × 10^-23 g
Molecules per gram3.5359878 × 10^22

Name

NameAmmonia
Systematic nameazaneIUPAC nomenclature
SourceNerdulator compound names, September 2026. Systematic names follow the IUPAC Red Book (2005) and Blue Book (2013)

Composition by mass

N82.2%
H17.8%
Nitrogen (N)14.007 g/mol, 82.244%
Hydrogen (H × 3)3.024 g/mol, 17.756%

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