Sulphur crystals

General properties

Name, symbol, number: sulfur, S, 16

Pronunciation: /ˈsʌlfər/ sul-fər

Group, period, block: 16, 3, p

Standard atomic weight: 32.065(5)

Electron configuration: [Ne] 3s2 3p4

Electrons per shell: 2, 8, 6 (Image)

:

Physical properties

Phase: solid

Density (near r.t.): (alpha) 2.07 g·cm−3

Density (near r.t.): (beta) 1.96 g·cm−3

Density (near r.t.): (gamma) 1.92 g·cm−3

Liquid density at m.p.: 1.819 g·cm−3

Melting point: 388.36 K, 115.21 °C, 239.38 °F

Boiling point: 717.8 K, 444.6 °C, 832.3 °F

Critical point: 1314 K, 20.7 MPa

Heat of fusion: (mono) 1.727 kJ·mol−1

Heat of vaporization: (mono) 45 kJ·mol−1

Molar heat capacity: 22.75 J·mol−1·K−1

:

Atomic properties

Oxidation states: 6, 5, 4, 3, 2, 1, -1, -2 (strongly acidic oxide)

Electronegativity: 2.58 (Pauling scale)

Covalent radius: 105±3 pm

Van der Waals radius: 180 pm

:

Miscellanea

Crystal structure: orthorhombic

Magnetic ordering: diamagnetic

Electrical resistivity: (20 °C) (amorphous) 2×1015 Ω·m

Thermal conductivity: (amorphous) 0.205 W·m−1·K−1

Bulk modulus: 7.7 GPa

Mohs hardness: 2.0

CAS registry number: 7704-34-9


Flickr page for this photo.

Visit the Eye for Science Flickr group.

Get the "Eye for Science" widget here and install it on your own blog. Spread the scienticity!

Like this image? Want it for your smartphone wallpaper?
Use this QR Code to load it on your smartphone and enjoy!