Tin

Tin is a silvery white metal which is soft and pliable, and which emits the characteristic sound of "tin cry" when bent. It is a relatively common element, its abundance being 2.2 ppm in the earth’s crust. Its principal ore is cassiterite, SnO2 , from which the metal is obtained by reduction. Tin forms a stable oxide coating on its surface which makes it unreactive in water; however, it is soluble in both acids and alkalis, and reacts readily with halogens. As tin has good chemical resistance, it is used as a coating of other metals to prevent corrosion, the coating of steel to produce tin plate being an important example of this application. Tin is widely used in the manufacture of soft solders where it is alloyed with other elements to produce a wide range of alloys with different characteristics. Tin is also a constituent of bronzes, pewter, certain bearing materials and fusible alloys.


Symbol
Sn

Also known as
Plumbum Stridens

Discovered
Known and used by ancient civilisations.

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Atomic number 50 Clip
Atomic / Molecular Weight 118.71 gmol-1Clip
Density 7285 kgm-3Clip
Crystal Structure cub / bcc Clip
Lattice constant 583 fmClip
Melting Point 505.1281 KClip
Boiling Point 2993 KClip
Tensile strength 30000000 Nm-2Clip
Linear expansivity 0.000022 K-1Clip
Specific heat capacity 218 Jkg-1K-1Clip
Latent heat of fusion 59000 Jkg-1Clip
Thermal conductivity 65 to 68 Wm-1K-1Clip
Acoustic wave velocity (longitudinal bulk waves) 3380 ms-1Clip
Acoustic wave velocity (Irrotational waves) 2626 ms-1Clip
Acoustic wave velocity (Shear waves) 1594 ms-1Clip
Acoustic wave velocity (Rayleigh waves) 1491 ms-1Clip
Bulk Modulus of Rigidity 58200000000 Nm-2Clip
Electromotive Series 0.14 VClip
Electrical Conductivity 9170000 Sm-1Clip
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See also: Fields Metal, Hot Dip, Periodic Table, Pewter, Tetraethyl Tin, Tetramethyl Tin, Tin II Fluoride, Tin II Oxide, Tin IV Fluoride, Tin IV Hydride, Tin IV Oxide, Tin Whiskers.

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Subjects: Chemistry