ASTATINE SÖZCÜĞÜ İNGILIZCE DİLİNDE NE ANLAMA GELİR?
astatin
Astatin, At ve atom numarası 85 olan kimyasal bir simgeye sahip radyoaktif bir kimyasal elementtir. Dünya üzerinde ancak ağır ağır elementlerin radyoaktif bozunması sonucu oluşur. Tüm izotopları kısa ömürlüdür; en istikrarlı astatin-210, yarılanma ömrü 8.1 saattir. Buna göre, astatin hakkında diğer birçok elementten çok daha az şey bilinmektedir. Gözlenen özellikler, iyotun daha ağır bir analoğu olması ile tutarlıdır; bu benzerliğe dayanılarak diğer birçok özellik tahmin edilmiştir. Elemental astatine hiç bakılmamıştır çünkü çıplak gözle görülebilecek kadar büyük bir kütle, kendi radyoaktivitesi tarafından üretilen ısı ile hemen buharlaşacaktır. Astatin karanlık olabilir, ya da metalik bir görünüme sahip olabilir ve bir yarıiletken olabilir, hatta bir metal olabilir. Bizmut ve polonyumunkine eşit, iyota kıyasla çok daha yüksek bir erime noktasına sahip olma ihtimali yüksektir. Kimyasal olarak astatin, alkali veya alkalin toprak metalleri ile iyonik astatitler oluşturması beklenen halojen (klor ve florür içeren grup) olarak az çok davranır; diğer halojenler dahil olmak üzere ametallerle kovalent bileşikler oluşturduğu bilinmektedir.
İngilizce sözlükte astatine sözcüğünün tanımı
Sözlükteki astatinin tanımı halojen serisinin radyoaktif bir elementidir: doğal olarak az miktarda oluşur ve bizmut'u alfa parçacıklarıyla bombardıman ederek yapay olarak üretilen, uranyum ve toryumdan oluşan bir bozunum ürünüdür. Sembol: At; atom numarası: 85; En istikrarlı izotopun yarı ömrü, 210At: 8.1 saat; olası değerlik: 1,3,5 veya 7; erime noktası: 302 ° C; Kaynama noktası: 337 ° C.
«ASTATINE» İLE İLİŞKİLİ İNGILIZCE KİTAPLAR
astatine sözcüğünün kullanımını aşağıdaki kaynakça seçkisinde keşfedin.
astatine ile ilişkili kitaplar ve İngilizce edebiyattaki kullanımı ile ilgili bağlam sağlaması için küçük metinler.
1
The Halogen Elements: Fluorine, Chlorine, Bromine, Iodine, ...
Introduces the Halogen Family and teaches how these elements are connected, found, used, and structured.
2
The Radiochemistry of
Astatine
Evan H. Appelman. scintillator. It is advantageous to reduce the relatively high
background of the scintillator by operating it as an energy analyzer registering
only counts of energy in the vicinity of the ca. 90 kv. k-x-ray of the astatine's
polonium ...
52 £ 5 An autoradiograph reveals concentrations of astatine-211 in tissue from a
human thyroid tumour that has been implanted in a mouse. The "stars" are due to
the tracks of alpha particles emitted by the astatine particle in human tissue is ...
4
Inorganic Reactions and Methods, The Formation of Bonds to ...
Astatine lnterhalogen Compound 2.2.4.3.2. by Oxidizing Fluorinating Agents (
Excluding F2). RfI + XFn —> RfIF2 (a) When using xs halogen fluoride, the
iodotetrafluorides are obtained': RfI + ClF3 (BrF3, BrF5) —> RfIF4 (b) (J. SHAMIR)
1.
J. J. Zuckerman, A. P. Hagen,
2009
5
Fluorine and the Halogens
The. discovery. of. astatine. A gap was left in the periodic table where an element
was thought to exist, but was still undiscovered. Chemists were keen to find the
missing element and fill the gap, but it quickly became clear that they would have
...
6
Chemistry of Chemical Bonding
The separation of astatine from a bismuth target can be accomplished by
dissolving it in perchloric acid with subsequent precipitation of bismuth as the
phosphate. Polonium is coprecipitated with bismuth, the astatine being distilled
out of the ...
7
Advanced Inorganic Chemistry Vol-1
ssAt — — — > S4» o > K2Pn > s^Bi orbital electron capture a :207 -i > 8,Bi"
Separation of Astatine - Astatine is produced by bombardment of bismuth or
thorium with high-energy alpha particles. So, in order to produce astatine it is
necessary to ...
8
Nuclear and Radiation Chemistry
radius of At ion is 2.3A and in gaseous state it is 1.97A. (g) Astatine volatilizes
from glass surfaces even at room temperature. It is separated from polonium by
sublimation. Its volatilization from the surface of Ag, .Au or Pt is slow. Elemental ...
9
Astatine: Isotopes of
Astatine, Kenneth Ross Mackenzie, ...
Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: Astatine is a radioactive chemical element with the symbol At and atomic number 85.
10
Isotopes of
Astatine:
Astatine-191,
Astatine-192, ...
Source: Wikipedia. Pages: 144. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge.
«ASTATINE» TERİMİNİ İÇEREN HABERLER
Ulusal ve uluslararası basında konuşulanları ve
astatine teriminin aşağıdaki haberlerde hangi bağlamda kullanıldığını keşfedin.
Alpha therapy targets metastatic disease
Potential alpha-emitting isotopes include: bismuth-213, with a half-life of 46 minutes; astatine-211, with a half-life of 7.2 hours; radium-223 with ... «Medical Physics Web, Haz 15»
DOE Isotope Program Announces Availability of Radionuclide …
... and radium-223; investing in research on accelerator production of actinium-225; and supporting development of production of astatine-211 ... «Newswise, Haz 15»
Nightclubs: LA Grand Opening, Ignite
Flamboyant Fridays: The Astatine Collective, R&B and soul band, and DJ Shango Da Don, 9 p.m.-midnight, Fleet Reserve Association, 891 ... «Honolulu Pulse, May 15»
NM son on an epic walk talks of time, pace of life
This is a commodity that is as scarce as Astatine in the hurly burly global north: waiting. I've always found its absence – its negative value – in ... «Albuquerque Journal, Nis 15»
Nightclubs: First Friday, OpenHau5, Beat Root
AT85, live hip-hop, R&B, neo-soul, funk and reggae by the Astatine Collective, 10 p.m.-2 a.m., Dragon Upstairs. No cover. Super Handsome ... «Honolulu Pulse, Nis 15»
The lost elements: the periodic table's shadow side
... for the periodic table in the early 20th century, vacancies still existed, such as the elements 43 (technetium), 75 (rhenium) and 85 (astatine). «Royal Society of Chemistry, Mar 15»
Metro rushes to install more 'low-smoke' power cables after L'Enfant …
“This type of cabling has insulation and jacket material free of halogenated materials like fluorine, chlorine, bromine, iodine and astatine ... «Washington Post, Şub 15»
U.S. Shale Boom May Come To Abrupt End
With all due respect Mr. Spetseris, this is the most astatine post I have ever read. I don't even know where to start with you. Your EURs are ... «OilPrice.com, Oca 15»
The matrix (2015)
Halogen-free flame retardants are being developed because halogens (i.e., bromine, which, along with fluorine, chlorine, iodine and astatine, ... «High Performance Composites, Oca 15»
My Great-Great-Aunt Discovered Francium. And It Killed Her.
Only a minuscule fraction of Polonium 215 takes the beta-decay route, to become astatine. The time it takes for half a sample of an element to ... «New York Times, Ara 14»