Tin

Tin is a chemical element with the symbol Sn (from Latin: stannum) and atomic number 50. Tin is a silvery metal that characteristically has a faint yellow hue. Tin, like indium, is soft enough to be cut without much force. When a bar of tin is bent, the so-called “tin cry” can be heard as a result of sliding tin crystals reforming; this trait is shared by indium, cadmium, and frozen mercury. Pure tin after solidifying keeps a mirror-like appearance similar to most metals. However, in most tin alloys (such as pewter), the metal solidifies with a dull gray color. Tin is a post-transition metal in group 14 of the periodic table of elements.

Ang Trading – You can get tin from the mineral cassiterite, which contains stannic oxide, SnO2. It shows a chemical similarity to both of its neighbors in group 14, germanium and lead, and has two main oxidation states, +2 and the slightly more stable +4.

Casserite is the 49th most abundant element on Earth and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is β-tin, a silvery-white, malleable metal, but at low temperatures, it transforms into the less dense grey α-tin, which has the diamond cubic structure. Metallic one does not easily oxidize in air.

This 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 casserite are important, such as soft solder, pewter, bronze and phosphor bronze. A SnO2 composite is for superconducting magnets.

Most window glass construct is floating molten glass on molten tin to produce a flat surface. It’s salts when spritz onto glass to produces electrically conductive coatings.

The most important SnO2 salt in use is tin(II) chloride, which is for reducing agent and as a mordant for dyeing calico and silk. Casserite (IV) oxide is for ceramics and gas sensors. Zinc stannate (Zn2SnO4) is a fire-retardant used in plastics.

Some black mineral compounds have been used as anti-fouling paint for ships and boats, to prevent barnacles. However, even at low levels these compounds are deadly to marine life, especially oysters. Its use has now been put to stop in most countries.

Biological role
This mineral has no biological role in humans, although it may be essential to some species. The metal is non-toxic, but organo-tin compounds can be poisonous and must be handled with care. Plants easily absorb tin.

Natural abundance

Ore is set-up principally in the ore cassiterite (tin(IV) oxide). You see it mostly in the ‘tin belt’ stretching through China, Thailand and Indonesia.You can also find it in Peru, Bolivia and Brazil. It comes in use commercially by reducing the ore with coal in a furnace.

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