Carbon

Reactive nonmetals · Group 14 · Period 2

Atomic properties

Atomic number	6
Symbol	C
Standard atomic weight	12.011
Classification	Reactive nonmetals
Group	14
Period	2
Block	p-block
Electron configuration	[He] 2s2 2p2
Electronegativity (Pauling)	2.55
Common oxidation states	+4, +2, -4

Physical properties

Phase at 20 °C	Solid
Density	2.267 g/cm³
Melting point	3550 °C
Boiling point	4027 °C
Discovered	Ancient
CAS number	—

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