영어에서 ACTINIUM 의 뜻은 무엇인가요?
악티늄
악티늄은 1899 년에 발견 된 기호 Ac와 원자 번호 89를 갖는 방사성 화학 원소이다. 이것은 고립 될 최초의 비 기본 방사성 원소였다. actinium은 actinium 이전에 관찰되었지만, 1902 년까지는 고립되어 있지 않았다. actinium은 actinium과 lawrencium 사이의 15 가지 유사한 원소의 그룹 인 actinide 시리즈에 이름을 붙였다. 부드럽고 은백색의 방사성 금속 인 actinium은 대기 중의 산소와 수분과 빠르게 반응하여 산화를 방지하여 산화를 방지합니다. 대부분의 란탄 족 및 악티늄과 마찬가지로, 악티늄은 거의 모든 화학 화합물에서 산화 상태 +3을 취합니다. 악티늄은 22.7Ac의 동위 원소로 우라늄 광석의 흔적에서만 발견되며, 반감기는 21.772 년이며 주로 베타 입자를 방출합니다. 1 톤의 우라늄 광석은 약 0.2 밀리그램의 악티늄을 함유하고 있습니다. 악티늄과 란타늄의 물리적 및 화학적 성질이 매우 비슷하기 때문에 광석에서 악티늄을 분리하는 것이 비현실적입니다. 대신 원자로에서 226Ra의 중성자 조사에 의해 원소를 밀리그램 단위로 준비한다.
영어 사전에서 actinium 의 정의
사전에있는 악티늄의 정의는 악티늄 계열의 방사성 원소로, 우라늄의 붕괴 생성물로 발생합니다. 그것은 알파 입자 소스 및 중성자 생산에 사용됩니다. 기호 : Ac; 원자 번호 : 89; 가장 안정한 동위 원소의 반감기, 227Ac : 21.6 년; 상대 밀도 : 10.07; 용융점 : 1051 ℃; 끓는점 : 3200 ± 300 ° C.
«ACTINIUM» 관련 영어 책
다음 도서 목록 항목에서
actinium 의 용법을 확인하세요.
actinium 에 관련된 책과 해당 책의 짧은 발췌문을 통해 영어 서적에서 단어가 사용되는 맥락을 제공합니다.
1
The History and Use of Our Earth's Chemical Elements: A ...
Characteristics Actinium is the last (bottom) member of group 3 (IIIB) of elements
in the periodic table and the first of the actinide series of metallic elements that
share similar chemical and physical characteristics. Actinium is also closely ...
Actinium trifluoride can be produced either in solution or in solid reaction. The
former reaction is carried out at room temperature, by adding hydrofluoric acid to
a solution containing actinium ions. In the latter method, actinium metal is treated
...
3
The Radiochemistry of the Rare Earths: Scandium, Yttrium, ...
To aqueous layer containing actinium, rare-earth, and other activities add NHjOH
to adjust pH to 5. 5-7. 0. 12. Add 10 ml TTA-benzene. Stir. Recheck pH. Contact
20 minutes . 13. Pipet benzene layer containing actinium and rare earths into ...
Peter Cooper Stevenson, W. E. Nervik,
1961
4
The
Actinium-Uranium Ratio in Colorado Carnotite
This is a pre-1923 historical reproduction that was curated for quality. Quality assurance was conducted on each of these books in an attempt to remove books with imperfections introduced by the digitization process.
Fussler Karl Hartley,
2009
5
Chemistry and Analysis of Radionuclides: Laboratory ...
After , the longest-lived isotope of actinium is , which has a half-life of 10 days. It
is the daughter of beta-emitting and is used as a tracer in analyses. Neither nor
its parent occur naturally, but the latter is milked from a generator of artificially ...
Jukka Lehto, Xiaolin Hou,
2011
6
The Chemical News and Journal of Physical Science
I. Radio-actinium. In earlier articles (Berichte, 1904. xxxvii., 1697; 1905, xxxviii.,
778) I have already stated that the artificial barium sulphate precipitates obtained
from emanium solutions retain their activity for many months. Also, I noticed that ...
It was suggested some time ago that actinium is itself the true parent of radium,
but no definite evidence has been brought forward to prove this. The matter has
been under investigation for some time by E. Rutherford, and he gives here a ...
8
The Collected Papers of Lord Rutherford of Nelson
the precipitate produced fresh actinium X and the density rose. The gradual fall of
the activity to a constant value is due to the decay of the excess of the
radioactinium together with its transformation products. The activity curve will be
seen to ...
iso NA half-life DM DE (MeV) DP 225Ac syn 10 d α 5.935 221Fr 226 Ac syn 29.37
h β− 1.117 226Th ε 0.640 226Ra α 5.536 222Fr 227 Ac 100% 21.773 y β− 0.045
227Th α 5.042 223Fr Actinium ( /ækˈtɪniəm/ ak-tin-nee-əm) is a radioactive ...
10
A Glossary of Terms in Nuclear Science and Technology
The compounds of the elements beyond actinium in this state are generally
isostructural with the corresponding ones of actinium and of the lanthanides.
Compare similar usage for thorides, protactinides, and uranides. actinium (Ac) An
...
National Research Council (U.S.). Conference on Glossary of Terms in Nuclear Science and Technology,
1957
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