Sulphur

Atomic Structure

Uses (matches, gunpowder, medicines)

Atomic number	:	16

Atomic mass	:	32.06 g.mol^-1

Electronegativity according to Pauling	:	2.5

Density	:	2.07 g.cm^-3 at 20 °C

Melting point	:	113 °C

Boiling point	:	445 °C

Vanderwaals radius	:	0.127 nm

Ionic radius	:	0.184 nm (-2) ; 0.029 nm (+6)

Isotopes	:	5

Electronic shell	:	[Ne] 3s²3p⁴

Energy of first ionisation	:	999.3 kJ.mol^-1

Energy of second ionisation	:	2252 kJ.mol^-1

Energy of third ionisation	:	3357 kJ.mol^-1

Standard potential	:	- 0.51 V

Discovered by	:	The ancients