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Sn (Tin)

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Keterangan

      Tin is unreactive to water and oxygen, as it is protected by an oxide film. It reacts with acids and bases. When heated in air, tin forms tin(IV) oxide which is feebly acidic.
      When a tin bar is broken, a "tin cry" is heard due to the breaking of the tin crystals.
     Tin has two allotropic forms. On warming, grey tin, with a cubic structure, changes into white tin, the ordinary form of the metal.

Nama lain (trademark, branding etc.)

Stannum, Kositar, étain, Zinn - r, Stagno, Tinn, Estanho, Олово, Estaño, Tenn, Cín

Spesifikasi Produk

Overview of Tin
Atomic Number 50
Group 14
Period  5
 Series  Metals
Relative Atomic Mass (12C=12.000)  118.71
Boiling Point 2543K 2270°C 4118°F
Melting Point:  505.21K 232.06°C 449.71°F
Density/kg m-3  7310 (293K)
Ground State Electron Configuration  [Kr]4d105s25p2
Electron Affinity(M-M-)/kJ mol-1  -121
Discoverer:  Known to ancient civilization
Discovery Location:  Unknown
Discovery Year:  Unknown
Name Origin: Symbol Sn from Latin: stannum (tin). Tin from Anglo-Saxon

Aplikasi

     Tin has many uses. It takes a high polish and is used to coat other metals to prevent corrosion, such as in tin cans which are made of tin-coated steel. Alloys of tin are important, such as soft solder, pewter, bronze and phosphor bronze. The most important tin salt used is tin(II) chloride which is used as a reducing agent and as a mordant. Tin salts sprayed onto glass are used to produce electrically conductive coatings. Most window glass is made by floating molten glass on molten tin to produce a flat surface. Recently, a tin-niobium alloy that is superconductive at very low temperatures has attracted interest.

Bahan Baku

Tin is a chemical element with symbol Sn (for Latin: stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group-14 elements, germanium and lead, and has two possible oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table. Tin is obtained chiefly from the mineral cassiterite, where it occurs as tin dioxide, SnO2.

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