6 · C

Carbon

Known since antiquity, with no discovery year.

Identity

Atomic number: 6
Symbol: C
Canonical name: Carbon
Category: nonmetal
Group: 14
Period: 2
Block: p

Properties

These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.

Atomic mass: 12.011 u
Electron configuration: [He] 2s2 2p2
Electrons per shell: 2, 4
Standard state: solid
Density: 1.821 g/cm³ Density depends on the allotrope. This figure is not that of diamond.
Electronegativity: 2.55 Pauling
First ionization energy: 1,086.5 kJ/mol
Electron affinity: 121.7763 kJ/mol

History

Antiquity

Charcoal and soot were worked in antiquity. No discovery year can be assigned.

See the element timeline

Etymology

Theme: mineral
Language: latin
Root: carbo
Meaning: charcoal

Sources

IUPAC, Periodic Table of the Elements
Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.