7
N
14.007
Nitrogen (N)
Element 7 · Period 2 · Group 15
nonmetal
gas at room temp
p-block
About Nitrogen
Makes up 78% of Earth's atmosphere. Essential for amino acids and DNA.
Physical Properties
Atomic Mass
14.007 u
State at 25°C
Gas
Melting Point
-210.01 °C
Boiling Point
-195.8 °C
Density
0.001251 g/cm³
Magnetism
Diamagnetic
Atomic Properties
Electron Configuration
[He] 2s² 2p³
Electron Shells
2, 5
Electronegativity
3.04
Atomic Radius
56 pm
Ionization Energy
1402 kJ/mol
Oxidation States
-3 to +5
Discovery & History
Discovered By
Daniel Rutherford
Discovery Year
1772
Named By
Jean-Antoine Chaptal
Name origin: Greek: nitron + genes (niter-forming)
Frequently Asked Questions
- Is Nitrogen a metal, nonmetal, or metalloid?
- Nitrogen is classified as a nonmetal.
- What state is Nitrogen in at room temperature?
- Nitrogen is a gas at standard room temperature (25°C).
- What is the atomic mass of Nitrogen?
- Nitrogen has an atomic mass of 14.007 atomic mass units (u).
- Who discovered Nitrogen?
- Nitrogen was discovered by Daniel Rutherford in 1772.
- Where is Nitrogen on the periodic table?
- Nitrogen is element number 7, located in period 2 and group 15.