- actinoid elements
- <chem> (atomic number 89 through 103) ■ Actinidenreihe f ; Actiniumreihe f ; Actinoidenelemente npl
English-german technical dictionary. 2013.
actinoid elements
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Actinoid — The actinoid (according to current IUPAC terminology; previously actinide) series encompasses the 15 chemical elements that lie between actinium and lawrencium included on the periodic table, with atomic numbers 89 103. [… … Wikipedia
Actinoid — … Deutsch Wikipedia
actinoid — n. any of a series of radioactive chemical elements with atomic numbers 89 through 103 adj. having a radial form; star shaped; radiated … English contemporary dictionary
berkelium — Symbol: Bk Atomic number: 97 Atomic weight: (247) Radioactive metallic transuranic element. Belongs to actinoid series. Eight known isotopes, the most common Bk 247, has a half life of 1.4*10^3 years. First produced by Glenn T. Seaborg and… … Elements of periodic system
californium — Symbol: Cf Atomic number: 98 Atomic weight: (249) Radioactive metallic transuranic element. Belongs to actinoid series. Cf 251 has a half life of about 700 years. Nine isotopes are known. Cf 252 is an intense neutron source, which makes it an… … Elements of periodic system
curium — Symbol: Cm Atomic number: 96 Atomic weight: (247) Radioactive metallic transuranic element. Belongs to actinoid series. Nine known isotopes, Cm 247 has a half life of 1.64*10^7 years. First identified by Glenn T. Seaborg and associates in 1944,… … Elements of periodic system
mendelevium — Symbol: Md Atomic number: 101 Atomic weight: (256) Radioactive metallic transuranic element. Belongs to the actinoid series. Only known isotope, Md 256 has a half life of 1.3 hours. First identified by Glenn T. Seaborg, Albert Ghiorso and… … Elements of periodic system
einsteinium — /uyn stuy nee euhm/, n. Chem., Physics. a transuranic element. Symbol: Es; at. no.: 99. [1950 55; named after Albert EINSTEIN; see IUM] * * * ▪ chemical element (Es), synthetic chemical element of the actinoid series of the periodic table,… … Universalium
actinium — /ak tin ee euhm/, n. Chem. a radioactive silver white metallic element that glows blue in the dark, resembling the rare earths in chemical behavior and valence. Symbol: Ac; at. no.: 89; at. wt.: 227. [1900 05; ACTIN + IUM] * * * ▪ chemical… … Universalium
Ununoctium — ununseptium ← ununoctium → ununennium Rn ↑ Uuo ↓ (Uho) … Wikipedia
transuranium element — Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92). All are radioactive (see radioactivity), with half lives ranging from tens of millions of years to fractions of a millisecond. Only two,… … Universalium
