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Tseerium

Faan Wikipedia
Tekst üüb Öömrang
Eegenskapen
Algemian
Nööm, Symbool, Numer Tseerium, Ce, 58
Seerie Lantanoid
Skööl, Periode, Blook La, 6, f
Klöör, Skak salwern witj
CAS-Numer 7440-45-1
Uundial 43 ppm[1]
Atomaar [2]
Atoommase 140,116(1)[3] u
Atoomraadius (bereegent) 185 () pm
Kovalent-Raadius 204 pm
Elektroonen [Xe] 4f1 5d1 6s2
1. Ionisiarang 534,4 kJ/mol
2. Ionisiarang 1050 kJ/mol
3. Ionisiarang 1949 kJ/mol
4. Ionisiarang 3547 kJ/mol
Füsikaalisk [2]
Tustant fääst
Kristal kuubisk
Sachthaid 6,773 g/cm3 (25 °C)[4]
Hardhaid 2,5
Magnetismus paramagneetisk (Χm = 1,4 · 10−3)[5]
Smoltponkt 1068 K (795 °C)
Köögponkt 3743 K[6] K (3470 °C)
Molaar Rüm 20,69 · 10−6 m3/mol
Dampwaremk 398 kJ/mol[6] kJ/mol
Smoltwaremk 5,5 kJ/mol
Faard faan a tuun 2100 m/s bi 293,15 K
Elektrisk struumfeerang 1,35 · 106 A/(V · m)
Waremkfeerang 11 W/(m · K)
Cheemisk [2]
Oksidatsionstustant 3, 4
Sür of baasisk lacht baasisk
Normoolpotentiaal −2,34 V (Ce3+ + 3 e → Ce)
Elektronegatiwiteet 1,12 (Pauling-Skala)
Isotoopen
Isotoop NH t1/2 Aktiwiteet Energii (MeV) Produkt
134Ce

{syn.}

3,16 d ε 0,500 134La
135Ce

{syn.}

17,7 h ε 2,026 135La
136Ce

0,19 %

stabiil
137Ce

{syn.}

9,0 h ε 1,222 137La
138Ce

0,25 %

stabiil
139Ce

{syn.}

137,64 d ε 0,581 139La
140Ce

88,48 %

stabiil
141Ce

{syn.}

32,501 d β 0,581 141Pr
142Ce

11,08 %

5 · 1016 a ββ 4,505 142Nd
143Ce

{syn.}

33,039 h β 1,462 143Pr
144Ce

{syn.}

284,893 d β 0,319 144Pr
Muar isotoopen bi List faan isotoopen
Seekerhaid
GHS-Kääntiaken [7]
02 – Braant fiks gau

Gefoor

H- an P-wäärnang H: 228
EUH: nian EUH-wäärnang
P: 231+232-​233-​280-​370+378-​402+404-​501Vorlage:P-Sätze/Wartung/mehr als 5 Sätze [7]
EU-Gefoorentiaken
ei bekäänd
ei bekäänd
R- an S-wäärnang R: ?
S: ?
Miast wurd SI-ianhaiden brükt.

Tseerium (uk Cerium of Cer) as en cheemisk element mä det ufkörtang Ce an det atoomnumer 58. Hat hiart tu a lantaniiden an diarmä tu a raar eerden.


Luke uk diar

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Commons Commonskategorii: Tseerium – Saamlang faan bilen of filmer
  1. Harry H. Binder: Lexikon der chemischen Elemente. S. Hirzel Verlag, Stuttgart 1999, ISBN 3-7776-0736-3.
  2. A taalen uun't infobox kem miast faan www.webelements.com (Cer).
  3. CIAAW, Standard Atomic Weights Revised 2013.
  4. N. N. Greenwood, A. Earnshaw: Chemie der Elemente. 1. aplaag. VCH, Weinheim 1988, ISBN 3-527-26169-9, S. 1579.
  5. Robert C. Weast (Hrsg.): CRC Handbook of Chemistry and Physics. CRC (Chemical Rubber Publishing Company), Boca Raton 1990, ISBN 0-8493-0470-9, S. E-129 bis E-145. Wäärser uun g/mol an cgs-ianhaiden. Amreegent tu SI-wäärs.
  6. 6,0 6,1 Yiming Zhang, Julian R. G. Evans, Shoufeng Yang: Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks. Uun: Journal of Chemical & Engineering Data. 56, 2011, S. 328–337, doi:10.1021/je1011086.
  7. 7,0 7,1 Iindraanj tu Cer, Späne uun't GESTIS-dootenbeenk faan't IFA, ufrepen di 2. April 2018 (mä JavaScript).
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