Input interpretation
nitrogen
Chemical names and formulas
formula | N_2 name | nitrogen IUPAC name | molecular nitrogen alternate names | dinitrogen | Freon 728 | molecular nitrogen | nitrogen gas | R-728 mass fractions | N (nitrogen) 100%
Lewis structure
Draw the Lewis structure of nitrogen. Start by drawing the overall structure of the molecule, ignoring potential double and triple bonds: Count the total valence electrons of the nitrogen (n_N, val = 5) atoms: 2 n_N, val = 10 Calculate the number of electrons needed to completely fill the valence shells for nitrogen (n_N, full = 8): 2 n_N, full = 16 Subtracting these two numbers shows that 16 - 10 = 6 bonding electrons are needed. Each bond has two electrons, so in addition to the 1 bond already present in the diagram add 2 bonds. Identify the atoms that want additional bonds and the number of electrons remaining on each atom: Fill in the 2 bonds by pairing electrons between adjacent highlighted atoms: Answer: | |
3D structure
3D structure
Basic properties
molar mass | 28.014 g/mol phase | gas (at STP) melting point | -210 °C boiling point | -195.79 °C density | 0.001251 g/cm^3 (at 0 °C) solubility in water | insoluble dielectric constant | 1.001
Gas properties (at STP)
density | 0.001251 g/cm^3 (at 0 °C) vapor density | 0.97 (relative to air) molar volume | 22390 cm^3/mol surface tension | 0.0066 N/m refractive index | 1.000298 dynamic viscosity | 1.78×10^-5 Pa s (at 25 °C)
Units
Thermodynamic properties
specific heat capacity c_p | gas | 1.039 J/(g K) | liquid | 2.042 J/(g K) molar heat capacity c_p | gas | 29.1 J/(mol K) | liquid | 57.2 J/(mol K) specific free energy of formation Δ_fG° | gas | 0 kJ/g molar free energy of formation Δ_fG° | gas | 0 kJ/mol specific heat of formation Δ_fH° | gas | 0 kJ/g molar heat of formation Δ_fH° | gas | 0 kJ/mol specific entropy S° | gas | 6.854 J/(g K) molar entropy S° | gas | 192 J/(mol K) molar heat of vaporization | 5.57 kJ/mol | specific heat of vaporization | 0.1988 kJ/g | molar heat of fusion | 0.71 kJ/mol | specific heat of fusion | 0.025 kJ/g | critical temperature | 126.21 K | critical pressure | 3.39 MPa | (at STP)
Phase diagram
Phase diagram
Units
Chemical identifiers
CAS number | 7727-37-9 PubChem CID number | 947 PubChem SID number | 24857796 SMILES identifier | N#N InChI identifier | InChI=1/N2/c1-2 RTECS number | QW9700000 MDL number | MFCD00011416
NFPA label
NFPA label
NFPA health rating | 3 NFPA fire rating | 0 NFPA reactivity rating | 0
Toxicity properties
odor | odorless
RTECS classes | other