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Se - SeleniumSelenium

Selenium is a chemical element from the periodic table. It is a non-metal with properties between those of metal and non-metal elements. Selenium is primarily used in electronics, such as photocells and solar cells. It is also used in the production of optical glass and pigments. Selenium is silvery-grey in color, and is usually found in combination with sulfur and metals.

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Atomic number34
GroupVIA
Period4
Mass78.96
Latin nameSelenium
Electron configuration[Ar]3d10 4s2 4p4
Oxidation state-2, -1, 0, 1, 2, 3, 4, 5, 6