selenium: Quick Facts

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Facts

Also Known As	Se

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A labeled diagram of the selenium element from the periodic table shows its atomic number 34, symbol Se, atomic weight 78.971, electron configuration, and name. Icons indicate selenium is a solid, nonmetal with a hexagonal crystal structure and strongly acidic higher-valence oxides.

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Topics

selenium compound human nutrition chemical element oxygen group element hydrogen carbon sodium nitrogen sulfur phosphorus boron iodine fluorine noble gas

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Key People

Jöns Jacob Berzelius

Jöns Jacob Berzelius

Swedish chemist

Concept artwork on the periodic table of elements.

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Periodic Table of the elements concept image (chemistry)

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Periodic table of the elements. Left column indicates the subshells that are being filled as atomic number Z increases. The body of the table shows element symbols and Z. analysis and measurement

Periodic Table of the Elements