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neptunium
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nature : Periodic System III, vice ethnic communities actinide elements. An artificial radioactive elements. Atomic number 93. The half-life radioisotope 237 for 2200. Amu 237.0482. The silver-white metal. Density 18.04-20.45. 640 ° C melting point. The boiling point 3902 ° C (projected value). Chemical properties ranging from uranium and plutonium between the three components interesting series. In the air to slow oxidation. And hydrogen at 50 ° C, generating a black sheet of HG. Neptunium-soluble hydrochloride. Its compounds have fluoride, chloride, oxides, sulfates, oxalate, such as acetate. Preparation for the main plutonium 238, the latter in the aerospace, marine and medical isotopes can be used as energy. By fluoride neptunium NpF3 three or four fluoride neptunium NpF4 metal calcium or barium reduction in 1200 ° Cderived.


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More Detailed Data:
1) Neptunium
2) neptunium
3) neptunium Np
4) neptunium-237
5) neptunium-239
6) neptunium tetrabromide
7) neptunium hexafluoride
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