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7N14.007
Nitrogen
Diatomic NonmetalNitrogen is a chemical element with symbol N and atomic number 7. It is the lightest pnictogen and at room temperature, it is a transparent, odorless diatomic gas. Nitrogen is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System.
Phase: GasAppearance: colorless gas, liquid or solid
2, 5
Physical Properties
Atomic Mass14.007 u
Density1.251 g/cm³
Melting Point63.15 K
Boiling Point77.355 K
Period2
PhaseGas
Chemical Properties
Electron Configuration1s2 2s2 2p3
Semantic Config[He] 2s2 2p3
Shells2, 5
Electron Affinity-6.8 kJ/mol
Electronegativity3.04
Ionization Energies
IE1: 1402.3 kJ/molIE2: 2856 kJ/molIE3: 4578.1 kJ/molIE4: 7475 kJ/molIE5: 9444.9 kJ/molIE6: 53266.6 kJ/molIE7: 64360 kJ/mol
Discovery