[Latest] How old is Nitrogen now?

Living Person

Nitrogen
is

As of April 19, 2026

254 years old
approximately!

* Calculated from Wikipedia data.
Accuracy is not guaranteed.

Nitrogen, ₇N

Liquid nitrogen (N2 at below −196 °C)
Nitrogen
Allotropes	see § Allotropes
Appearance	colorless gas, liquid or solid
Standard atomic weight Ar°(N)
	[14.00643, 14.00728] 14.007±0.001 (abridged)
Nitrogen in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson – ↑ N ↓ P carbon ← nitrogen → oxygen
Atomic number (Z)	7
Group	group 15 (pnictogens)
Period	period 2
Block	p-block
Electron configuration	[He] 2s 2p
Electrons per shell	2, 5
Physical properties
Phase at STP	gas
Melting point	(N2) 63.23 K ​(−209.92 °C, ​−345.86 °F)
Boiling point	(N2) 77.355 K ​(−195.795 °C, ​−320.431 °F)
Density (at STP)	1.2506 g/L at 0 °C, 1013 mbar
when liquid (at b.p.)	0.808 g/cm
Triple point	63.151 K, ​12.52 kPa
Critical point	126.21 K, 3.39 MPa
Heat of fusion	(N2) 0.72 kJ/mol
Heat of vaporisation	(N2) 5.57 kJ/mol
Molar heat capacity	14.562 J/(mol·K) (N) 29.124 J/(mol·K) (N2)
Specific heat capacity	1039.623 J/(kg·K) (N)
Vapour pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 37 41 46 53 62 77
Atomic properties
Oxidation states	common: −3, +3, +5 −2, −1, 0, +1, +2, +4
Electronegativity	Pauling scale: 3.04
Ionisation energies	1st: 1402.3 kJ/mol 2nd: 2856 kJ/mol 3rd: 4578.1 kJ/mol (more)
Covalent radius	71±1 pm
Van der Waals radius	155 pm
Spectral lines of nitrogen
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal (hP4)
Lattice constants	a = 411.6 pm c = 673.4 pm (at t.p.)
Thermal conductivity	25.83×10 W/(m⋅K)
Magnetic ordering	diamagnetic
Speed of sound	353 m/s (gas, at 27 °C)
CAS Number	17778-88-0 7727-37-9 (N2)
History
Naming	from French nitre (“saltpetre”) + -gène ("forming")
Discovery	Daniel Rutherford (1772)
Named by	Jean-Antoine Chaptal (1790)
Isotopes of nitrogen v e
Main isotopes Decay Isotope abun­dance half-life (t1/2) mode pro­duct N trace 9.965 min β C N 99.6% stable N 0.380% stable N synth 7.13 s β O βα<0.01% C
Category: Nitrogen view talk edit | references

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