Technetium (symbol Tc, atomic number 43) is a transition element with a silvery gray color. It was first detected by the Japanese scientist Masataka Ogawa in 1908. Emilio Segre and Carlo Perrier discovered the element in 1936. The name comes from technetos in Greek, meaning "artificial". Today, technetium is isolated in laboratories only. Deuterium nuclei are used to bombard molybdenum and isolate Tc. It is also formed through reactions of hydrogen and pertechnatate and hydrogen and sulphide.
Isotopes, Compounds, and Properties
This metal has a hexagonal close-packed structure and is paramagnetic. Common oxidation states include +7, +5, and +4. The element...Read More