| Eegenskapen
|
|
|
| Algemian
|
| Nööm, Symbool, Numer
|
Praseodüüm, Pr, 59
|
| Seerie
|
Lantanoid
|
| Skööl, Periode, Blook
|
La, 6, f
|
| Klöör, Skak
|
salwern witj, lacht güül
|
| CAS-Numer
|
7440-10-0
|
| Uundial
|
5,2 ppm[1]
|
| Atomaar [2]
|
| Atoommase
|
140,90766(2)[3][4] u
|
| Atoomraadius (bereegent)
|
185 (247) pm
|
| Kovalent-Raadius
|
203 pm
|
| Elektroonen
|
[Xe] 4f3 6s2
|
| 1. Ionisiarang
|
527 kJ/mol
|
| 2. Ionisiarang
|
1020 kJ/mol
|
| 3. Ionisiarang
|
2086 kJ/mol
|
| 4. Ionisiarang
|
3761 kJ/mol
|
| Füsikaalisk [2]
|
| Tustant
|
fääst
|
| Kristal
|
hexagonaal
|
| Sachthaid
|
6,475 g/cm3 (25 °C)[5]
|
| Magnetismus
|
paramagneetisk (Χm = 2,9 · 10−3)[6]
|
| Smoltponkt
|
1208 K (935 °C)
|
| Köögponkt
|
3403 K[7] K (3130 °C)
|
| Molaar Rüm
|
20,80 · 10−6 m3/mol
|
| Dampwaremk
|
331 kJ/mol[7] kJ/mol
|
| Smoltwaremk
|
6,9 kJ/mol
|
| Faard faan a tuun
|
2280 m/s bi 293,15 K
|
| Elektrisk struumfeerang
|
1,43 · 106 A/(V · m)
|
| Waremkfeerang
|
13 W/(m · K)
|
| Cheemisk [2]
|
| Oksidatsionstustant
|
3, 4, 2
|
| Sür of baasisk
|
lacht baasisk
|
| Normoolpotentiaal
|
−2,35 V
(Pr3+ + 3 e− → Pr)
|
| Elektronegatiwiteet
|
1,13 (Pauling-Skala)
|
| Isotoopen
|
| Isotoop
|
NH
|
t1/2
|
Aktiwiteet
|
Energii (MeV)
|
Produkt
| | 137Pr |
{syn.}
| 1,28 h | ε | 2,702 | 137Ce |
| 138Pr |
{syn.}
| 1,45 min | ε | 4,437 | 138Ce |
| 139Pr |
{syn.}
| 4,41 h | ε | 2,129 | 139Ce |
| 140Pr |
{syn.}
| 3,39 min | ε | 3,388 | 140Ce |
| 141Pr |
100 %
|
stabiil |
| 142Pr |
{syn.}
| 19,12 h | β− | 2,162 | 142Nd | | ε | 0,745 | 142Ce |
| 143Pr |
{syn.}
| 13,57 d | β− | 0,934 | 143Nd |
| 144Pr |
{syn.}
| 17,28 min | β− | 2,997 | 144Nd |
| 145Pr |
{syn.}
| 5,984 h | β− | 1,805 | 145Nd |
|
| Muar isotoopen bi List faan isotoopen
|
| NMR-Eegenskapen
|
|
|
| Seekerhaid
|
|
|
| Miast wurd SI-ianhaiden brükt.
|
Praseodüüm as en cheemisk element mä det ufkörtang Pr an det atoomnumer 59. Hat hiart tu a lantanoiden. Di nööm komt faan't greks πράσινος prásinos „green“, an δίδυμος didymos „twanlang“ (twanlang faan lantaan).
-
SIMS-spektrum faan a
isotoopen
-
Elektroonenskel
-
Rian praseodüüm
-
Praseodüüm glääs
- ↑ Harry H. Binder: Lexikon der chemischen Elemente. S. Hirzel Verlag, Stuttgart 1999, ISBN 3-7776-0736-3.
- ↑ A taalen för't infobox kem miast faan www.webelements.com (Praseodym) .
- ↑ IUPAC, Standard Atomic Weights Revised v2 (Memento faan di 3. Marts 2016 uun't Internet Archive).
- ↑ CIAAW, Standard Atomic Weights Revised 2013.
- ↑ N. N. Greenwood, A. Earnshaw: Chemie der Elemente. 1. aplaag. VCH, Weinheim 1988, ISBN 3-527-26169-9, S. 1579.
- ↑ 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 bit E-145. Wäärser diar uun g/mol an uun cgs-ianhaiden. Heer amreegent tu SI-wäärs.
- ↑ 7,0 7,1 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.
- ↑ 8,0 8,1 Dootenbleed Praseodymium, powder bi Sigma-Aldrich, ufrepen di 26. April 2017.
Tekst üüb Öömrang
Elektroonenskel
Rian praseodüüm
Praseodüüm glääs
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Commonskategorii: Praseodüüm – Saamlang faan bilen of filmer