Chemical Formula: TaSe2
Catalog Number: ST0313
CAS Number: 12039-55-3
Purity: >99.9%
Shape: Discs, Plates, Column Targets, Step Targets, Custom-made
Selenium is a chemical element originated from Moon (with the Greek name selene). It was first mentioned in 1817 and observed by J. Berzelius and G. Gahn. The isolation was later accomplished and announced by J. Berzelius and G. Gahn. “Se” is the canonical chemical symbol of selenium. Its atomic number in the periodic table of elements is 34 with location at Period 4 and Group 16, belonging to the p-block. The relative atomic mass of selenium is 78.96(3) Dalton, the number in the brackets indicating the uncertainty.
Tantalum is a chemical element originated from King Tantalus, father of Niobe from Greek mythology. It was first mentioned in 1802 and observed by G. Ekeberg. “Ta” is the canonical chemical symbol of tantalum. Its atomic number in the periodic table of elements is 73 with location at Period 6 and Group 5, belonging to the d-block. The relative atomic mass of tantalum is 180.94788(2) Dalton, the number in the brackets indicating the uncertainty.
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