Nitrogen

Chaitra 26/06/2026 19:58:08 Updated 26/06/2026 19:58:08

Property	Value
Atomic Number	7
Element	Nitrogen
Symbol	N
Atomic Mass	14.007 u
Number of Neutrons	7 (most common isotope, Nitrogen-14)
Number of Protons	7
Number of Electrons	7
Period	2
Group	15
Phase	Gas
Radioactive	No
Natural	Yes
Metal	No
Nonmetal	Yes
Metalloid	No
Type	Diatomic Nonmetal
Atomic Radius	56 pm
Electronegativity	3.04 (Pauling scale)
First Ionization Energy	14.534 eV
Density	0.0012506 g/cm³
Melting Point	−210.00 °C
Boiling Point	−195.79 °C
Number of Isotopes	2 (Nitrogen-14, Nitrogen-15)
Discoverer	Daniel Rutherford
Year	1772
Specific Heat	1.040 J/g·K
Number of Shells	2
Number of Valence Electrons	5