安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Praseodymium - Wikipedia
Praseodymium is a chemical element; it has symbol Pr and atomic number 59 It is the third member of the lanthanide series and is considered one of the rare-earth metals It is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties
- Praseodymium | Rare Earth Element, Atomic Number 59 | Britannica
praseodymium (Pr), chemical element, a rare-earth metal of the lanthanide series of the periodic table Praseodymium is a moderately soft, ductile, and malleable silvery white metal
- Praseodymium Element Facts Chemistry - chemicool. com
Praseodymium is a soft, malleable, ductile, silvery metal Praseodymium is one of the lanthanide rare earth metals It forms a flaky black oxide coating (Pr 6 O 11) in air Unlike many metal oxide layers, this one does not protect the metal from further oxidation The pale green sesquioxide, Pr 2 O 3, is not stable in air (4)
- Praseodymium | History, Uses, Facts, Physical Chemical Characteristics
Praseodymium was discovered in 1841 It is strong paramagnetic in nature It is widely used as an alloying agent with magnesium to make high strength metal It is found in house equipment like color television, lamps and glasses
- Praseodymium Facts, Symbol, Discovery, Properties, Uses - Chemistry Learner
What is Praseodymium Praseodymium (pronunciation pra-see-oh-DIM-ee-em [2]), represented by the chemical symbol Pr [1], is a soft transition element [8] belonging to the family of rare earth metals [3, 4] Naturally occurring Pr has a single stable isotope with mass number 141 [1, 3]
- What is Praseodymium Used For? - Stanford Materials
Praseodymium is a key component in the production of high-performance permanent magnets When alloyed with neodymium, boron, and iron, praseodymium contributes to the creation of magnets that are exceptionally strong, durable, and resistant to demagnetization
- Praseodymium - Periodic Table
Praseodymium - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements
- Periodic Table of Elements: Los Alamos National Laboratory
Praseodymium is soft, silvery, malleable, and ductile It is somewhat more resistant to corrosion in air than europium, lanthanum, cerium, or neodymium, but it does develop a green oxide coating that falls off when exposed to air As with other rare-earth metals, it should be kept under a light mineral oil or sealed in plastic
|
|
|