Editing Period 5 element (section)

===Tin===
{{main|Tin}}
'''Tin''' is a [[chemical element]] with the symbol '''Sn''' (for {{langx|la|stannum}}) and [[atomic number]] 50. It is a [[main-group element|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 state]]s, +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 [[isotope]]s in the periodic table. Tin is obtained chiefly from the [[mineral]] [[cassiterite]], where it occurs as [[tin dioxide]], SnO<sub>2</sub>.

This silvery, [[malleable]] [[post-transition metal]] is not easily [[oxidation|oxidized]] in air and is used to coat other metals to prevent [[corrosion]]. The first [[alloy]], used in large scale since 3000 BC, was [[bronze]], an alloy of tin and [[copper]]<!--[Anatoly F. Fomenko in his book "History: Fiction or Science",[Chronology 1, pg.70] asserts that Tin metallurgy is more complex than that of Copper and metallic tin had not been known during the Bronze Age. It is possible that some metal of a higher fusibility was manufactured using Copper with some minerals rich in tin content]-->. After 600 BC pure metallic tin was produced. [[Pewter]], which is an alloy of 85–90% tin with the remainder commonly consisting of copper, [[antimony]] and lead, was used for [[tableware]] from the [[Bronze Age]] until the 20th century. In modern times tin is used in many alloys, most notably tin/lead soft [[solder]]s, typically containing 60% or more of tin. Another large application for tin is corrosion-resistant [[tin plating]] of steel. Because of its low toxicity, tin-plated metal is also used for food packaging, giving the name to [[tin can]]s, which are made mostly of steel.