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Neodymium has a melting point of 1,024 °C (1,875 °F) and a boiling point of 3,074 °C (5,565 °F). Like other lanthanides, it usually has the oxidation state +3, but can also form in the +2 and +4 oxidation states, and even, in very rare conditions, +0. [4]
Common oxidation states. The oxidation state of an atom is a measure of the degree of oxidation of an atom. It is defined as being the charge that an atom would have if all bonds were ionic. Uncombined elements have an oxidation state of 0. The sum of the oxidation states within a compound or ion must equal the overall charge. Isotopes
Neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Neodymium is a ductile and malleable silvery white metal. It oxidizes readily in air to form an oxide, Nd2O3, which easily spalls, exposing the metal to further oxidation. The metal must be stored.
Neodymium compounds are compounds formed by the lanthanide metal neodymium (Nd). In these compounds, neodymium generally exhibits the +3 oxidation state, such as NdCl 3, Nd 2 (SO 4) 3 and Nd (CH 3 COO) 3. Compounds with neodymium in the +2 oxidation state are also known, such as NdCl 2 and NdI 2.
Get the facts about element Neodymium (Nd) [60] from the periodic table. Find physical data, electron configuration, chemical properties, aggregation states, isotope data (including decay trees) as well as some historic information.
Neodymium is a soft, bright, silvery white metal. It is one of the lanthanide rare earth metals. It forms a flaky oxide coating in air. Unlike many metal oxide layers, this one does not protect the metal from further oxidation. Neodymium has two allotropic forms, transforming from hexagonal to body-centered cubic above 800K (527 o C).
Oxidation States. Neodymium primarily exists in the +3 oxidation state, which means it typically loses three electrons when it forms compounds. Neodymium(III) compounds are the most common and are usually pale purple or pink in color.
Neodymium exhibits oxidation states II, III, and IV; atomic radii 181 pm, covalent radii 202 pm; redox potential (acidic solution) Nd 3+ /Nd −2.431 V; Nd 3+ /Nd 2+ −2.6 V; electronegativity (Pauling) 1.14. Ground electronic state of Nd 3+ is 4 I 9/2 with S = 3/2, L = 6, J = 9/2 with λ = 290 cm −1.
neodymium oxide. Formula: Nd 2 O 3. Molecular weight: 336.482. CAS Registry Number: 1313-97-9. Information on this page: Notes. Data at other public NIST sites: X-ray Photoelectron Spectroscopy Database, version 5.0. Options: Switch to calorie-based units. Notes. Go To: Top. Data from NIST Standard Reference Database 69: NIST Chemistry WebBook.
Neodymium has six known oxidation states ranging from +3 to +5. Neodymium is a relatively abundant element and can be found in igneous, metamorphic and sedimentary rocks. It is also found in phosphate and carbonate minerals as well as in some rare earth ores. Neodymium is also found in various sources of seawater and in some sedimentary rocks.