europium$26240$ - ορισμός. Τι είναι το europium$26240$
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Τι (ποιος) είναι europium$26240$ - ορισμός

Europium-155; Eu-155; Europium-130; Europium-131; Europium-132; Europium-133; Europium-134; Europium-135; Europium-136; Europium-137; Europium-138; Europium-139; Europium-140; Europium-141; Europium-142; Europium-143; Europium-144; Europium-145; Europium-146; Europium-147; Europium-148; Europium-149; Europium-150; Europium-151; Europium-152; Europium-153; Europium-154; Europium-156; Europium-157; Europium-158; Europium-159; Europium-160; Europium-161; Europium-162; Europium-163; Europium-164; Europium-165; Europium-166; Europium-167; Europium isotopes; Europium isotope

Europium compounds         
  • Europium(III) acetate powder
  • Europium nitrate is a colorless crystal that emits red light when excited by ultraviolet light at 365 nm.
  • Europium nitrate reacts with sodium hydroxide to form a precipitate of europium hydroxide. The reaction was irradiated with UV light at 365 nm.
ANY CHEMICAL COMPOUND HAVING AT LEAST ONE EUROPIUM ATOM
User:Praseodymium-141/Europium compounds; Eu compounds; Europium compound; Compounds of europium; Eu compound
Europium compounds are compounds formed by the lanthanide metal europium (Eu). In these compounds, europium generally exhibits the +3 oxidation state, such as EuCl3, Eu(NO3)3 and Eu(CH3COO)3.
Isotopes of europium         
Naturally occurring europium (63Eu) is composed of 2 isotopes, 151Eu and 153Eu, with 153Eu being the most abundant (52.2% natural abundance).
europium         
  • Europium is one of the elements involved in emitting red light in CRT televisions.
  • About 300 g of dendritic sublimated 99.998% pure europium handled in a glove box
  • Europium(III) sulfate fluorescing red under ultraviolet light
  • Europium(III) sulfate, Eu<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>
  • Oxidized europium, coated with yellow europium(II) carbonate
  • Monazite
CHEMICAL ELEMENT WITH ATOMIC NUMBER OF 63
Element 63; Europum; Eu (element); History of europium
[j?(?)r'??p??m]
¦ noun the chemical element of atomic number 63, a soft silvery-white metal of the lanthanide series. (Symbol: Eu)
Origin
early 20th cent.: mod. L., based on Europe.

Βικιπαίδεια

Isotopes of europium

Naturally occurring europium (63Eu) is composed of two isotopes, 151Eu and 153Eu, with 153Eu being the most abundant (52.2% natural abundance). While 153Eu is observationally stable, 151Eu was found in 2007 to be unstable and undergo alpha decay. The half-life is measured to be (4.62 ± 0.95(stat.) ± 0.68(syst.)) × 1018 years which corresponds to 1 alpha decay per two minutes in every kilogram of natural europium. Besides the natural radioisotope 151Eu, 36 artificial radioisotopes have been characterized, with the most stable being 150Eu with a half-life of 36.9 years, 152Eu with a half-life of 13.516 years, 154Eu with a half-life of 8.593 years, and 155Eu with a half-life of 4.7612 years. The majority of the remaining radioactive isotopes, which range from 130Eu to 170Eu, have half-lives that are less than 12.2 seconds. This element also has 18 meta states, with the most stable being 150mEu (t1/2 12.8 hours), 152m1Eu (t1/2 9.3116 hours) and 152m2Eu (t1/2 96 minutes).

The primary decay mode before the most abundant stable isotope, 153Eu, is electron capture, and the primary mode after is beta decay. The primary decay products before 153Eu are isotopes of samarium and the primary products after are isotopes of gadolinium.