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Definition of the noun actinium
What does actinium mean as a name of something?
noun - plural: actiniums
- a radioactive element of the actinide series; found in uranium ores
- examples: Actinium is a radioactive element. | Actinium-227 occurs in uranium ore. | Actinium-227 is a decay product of uranium-235. | Actinium was discovered by André-Louis Debierne in 1899. | Actinium is a silvery metal. | Actinium melts at 1,051°C. | Actinium vaporizes at 3,198°C. | The half life of actinium-225 is approximately 10 days. | The half life of actinium-224 is 2.7 hours.
- lexical domain: Substances - nouns denoting substances
- synonyms of actinium: Ac / atomic number 89
- more generic terms: chemical element / element = any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
- substance of: uranium ore = any ore from which uranium can be extracted
Phrases with Actinium
Printed dictionaries and other books with definitions for Actinium
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by CTI Reviews
Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. It was the ...
Physics, Physics by Cram101 Textbook Reviews
Actinium Neptunium Thorium Uranium Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. Itwas the first non-primordial radioactive element to be isolated. Polonium, radium ...
A Guide to the Elements (2002)
by Albert Stwertka
Actinium is a metal, and like radium it ...
Laboratory Techniques and Methodology by Jukka Lehto, Xiaolin Hou
Actinium is the first member in the actinide series and very much resembles lanthanuminitschemistry.Theonlyoxidationstateofactiniumis þIII,theAc3 þ ion being formed. Actinium primarily forms ionic compounds and does not hydrolyze strongly.
Nature's Building Blocks (2011)
An A-Z Guide to the Elements by John Emsley
g/cm3 oxide Ac2O3 Actinium is a soft, silvery-white, radioactive metal of group 3 (row 6d) of the periodic table. Pure samples of the metal have been obtained only with difficulty. Actinium reacts with water to release hydrogen gas.
Basic Concepts of Chemistry (2016)
by CTI Reviews
Actinium: Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899.Itwas the first nonprimordial radioactive element to be isolated. Polonium, radium andradon were observedbefore ...
by CTI Reviews
Actinium: Actinium is a radioactive chemical element with symbol Ac and atomic number 89, which was discovered in 1899. It was the first nonprimordial radioactive element to be isolated. Polonium, radium and radon were observed before ...
A Field Guide to Radiation (2012)
by Wayne Biddle
Actinium-225, -227 ACTINIUM IS A RARE ...
Literary Digest (1907)
It is generally considered, the writer goes on to say, that radium, and possibly actinium, are descended from uranium, and until re cently it was thought that actinium is the immediate predecessor or parent of radium. This has, however, never ...
by Richard C. Ropp
Actinium is a radioactive element with the symbol Ac and atomic number of 89. It was discovered in 1899 by Andre Debeime, a French chemist. It was the first nonprimordial radioactive element to be isolated. Po, Ra and radon were observed ...
A Dictionary of Science (2010)
by Elizabeth A. Martin
actinium SymbolAc. A radioactive metallic element belonging to group 3 of the periodic table; an.
A Dictionary of Chemistry (2016)
by Richard Rennie, Jonathan Law
actinium Symbol Ac. A silvery radioactive metallic element belonging to group 3 (formerly IIIA) ...
by David C. Ayres, Desmond G. Hellier
ACTINIUM CAS Registry No. 7440-34-8 Ac Actinium, a member of Group 3 of the Periodic ...
by John Daintith
actinium A soft, silvery-white, highly radioactive metallic element of group 3 (formerly IIIB) of the periodic table. It is usually considered to be the first member of the ACTINOID series. It occurs in minute ...
ACTINIUM. A radioactive element discovered by Debierne in 1899.
The Encyclopedia Britannica (1922)
a dictionary of arts, sciences, literature and general information by Hugh Chisholm
Actinium and mesothorium arc examples of such products. A number of new products have been discovered, particularly in doubted evidence, however, has been obtained that in a few cases the atoms break up in two or more distinct ways, ...
by Charlotte Buxton
actinium. acquiesce v. accept without protest. acquiescence n. acquiescent adj. acquire v. buy or get. acquisition n. 1 something acquired. 2 the act of acquiring. acquisitive adj. eager to acquire things. acquisitiveness n. acquit v. (acquitting ...
by Editorial Board
Actinium. Symbol:AcAtomic Number:89 Atomic Mass: 227.03amu. It is one of the elements in the actinide series of innertransition elements. It may also be classified as a rare earth element. Actinium is the first element of the actinide series.
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This is only an illustration, not actinium itself. A soft, silvery metal, which is reported to glow blue. This is due to its radioactivity.
Photo credit: GrrlScientist
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Video about Actinium
Video shows what actinium means. a radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores. actinium ...
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Scrabble value of A1C3T1I1N1I1U1M3
The value of this 8-letter word is 12 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.
Anagrams of ACTINIUM
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