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Nd symbol, atomic number 60, atomic weight 144.24, the external electronic 4f46s2 arrangement at the sixth cycle III B . 182.1 picometer atomic radius, the electric negative 1.2, mainly oxidation number +2, +3, +4. The silver-white metal, density 7g/cm3, 1021 ° C melting point, boiling point of 3027 ° C There are paramagnetic. Easy in the air oxidation, with the water and produce hydrogen acid reaction. The system for special alloys, optical glass, laser, color ceramics. By 1885 FENG Wei Ersaibahe found. Exist in single rock. Melt water electrolysis neodymium chloride obtained.
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