Neptunium
Chemisch element
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Neptunium is een scheikundig element met symbool Np en atoomnummer 93. Het is een zilverkleurig metalliek actinide. Wikipedia
Symbool: Np
Atoomnummer: 93
Elektronenconfiguratie: Rn 5f4 6d1 7s2
CAS-nummer: 7439-99-8
Ontdekt: 1940
Atoommassa: 237,0482 u
Dichtheid (kg·m−3): 20250
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Neptunium is a chemical element; it has symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element.
Element Neptunium (Np), Group 20, Atomic Number 93, f-block, Mass [237]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and ...
History. Named for the planet Neptune (named after the Roman god of the sea), the next planet out from the Sun after Uranus. There were many early false ...
Neptunium (93Np) is usually considered an artificial element, although trace quantities are found in nature, so a standard atomic weight cannot be given.
Neptunium is a chemical element with symbol Np and atomic number 93. Classified as an actinide, Neptunium is a solid at room temperature.
Neptunium is a ductile, silvery, radioactive metal. Neptunium forms numerous chemical compounds. Chemically it is extremely reactive and is attacked by oxygen, ...
10 okt 2017 · Neptunium is a silver metal and is very reactive, with four different oxidation states. When it combines with other elements it occurs as ...
Neptunium is a radioactive metal in the actinide series. Its name is derived from the planet Neptune. Neptune is the next planet out from the Sun after ...
The chemical element neptunium is classed as an actinide metal. It was discovered in 1940 by Edwin McMillan and Philip H. Abelson.