Selenium

Atomic Number: 34
Symbol: Se
Atomic Mass: 78.96 u
Number of Neutrons: 45
Melting Point: 221°C
Boiling Point: 685°C
Electrons per shell: 2.8.18.6
Electron configuration: [Ar] 3d¹⁰ 4s² 4p⁴

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Selenium is the 34th element in the periodic table. It is a non-metal with properties similar to sulfur and tellurium. It is found in the group with oxygen. This element is used by making pigments for ceramics, paint and plastics. It is also used in the glass industry by making red-colored glasses. Selenium is a powerful mineral that is essential for the proper functioning of your body. It helps the human body's metabolism a lot. Selenium is quite a rare metal, it is only found in a few places. Most of the selenium obtained during the refining of copper. This element was discovered by Jöns Jacob Berzelius, a Swedish chemist, in 1817.

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