Eegenskapen
|
|
Algemian
|
Nööm, Symbool, Numer
|
Lantaan, La, 57
|
Seerie
|
Auergungsmetal
|
Skööl, Periode, Blook
|
3, 6, d
|
Klöör, Skak
|
salwern witj
|
CAS-Numer
|
7439-91-0
|
Uundial
|
17 ppm[1]
|
Atomaar [2]
|
Atoommase
|
138,90547(7)[3] u
|
Atoomraadius (bereegent)
|
195 () pm
|
Kovalent-Raadius
|
207 pm
|
Elektroonen
|
[Xe] 5d1 6s2
|
1. Ionisiarang
|
538,1 kJ/mol
|
2. Ionisiarang
|
1067 kJ/mol
|
3. Ionisiarang
|
1850,3 kJ/mol
|
Füsikaalisk [2]
|
Tustant
|
fääst
|
Feranrangen
|
3
|
Kristal
|
hexagonaal
|
Sachthaid
|
6,17 g/cm3 (20 °C)[4]
|
Hardhaid
|
2,5
|
Magnetismus
|
paramagneetisk (Χm = 5,4 · 10−5)[5]
|
Smoltponkt
|
1193 K (920 °C)
|
Köögponkt
|
3743 K[6] K (3470 °C)
|
Molaar Rüm
|
22,39 · 10−6 m3/mol
|
Dampwaremk
|
400 kJ/mol[6] kJ/mol
|
Smoltwaremk
|
6,2 kJ/mol
|
Faard faan a tuun
|
2475 m/s
|
Elektrisk struumfeerang
|
1,626 · 106 A/(V · m)
|
Waremkfeerang
|
13 W/(m · K)
|
Cheemisk [2]
|
Oksidatsionstustant
|
3
|
Oksiiden
|
La2O3
|
Sür of baasisk
|
swaak baasisk
|
Normoolpotentiaal
|
−2,38 V (La3+ + 3 e− → La)
|
Elektronegatiwiteet
|
1,1 (Pauling-Skala)
|
Isotoopen
|
Isotoop
|
NH
|
t1/2
|
Aktiwiteet
|
Energii (MeV)
|
Produkt
| 135La |
{syn.}
| 19,5 h | ε | 1,200 | 135Ba |
136La |
{syn.}
| 9,87 min | ε | 2,870 | 136Ba |
137La |
{syn.}
| 60.000 a | ε | 0,600 | 137Ba |
138La |
0,09 %
| 1,05 · 1011 a | ε | 1,737 | 138Ba | β− | 1,044 | 138Ce |
139La |
99,91 %
|
stabiil |
140La |
{syn.}
| 1,6731 d | β− | 3,762 | 140Ce |
141La |
{syn.}
| 3,92 h | β− | 2,502 | 141Ce |
|
Muar isotoopen bi List faan isotoopen
|
NMR-Eegenskapen
|
|
Seekerhaid
|
|
Miast wurd SI-ianhaiden brükt.
|
Lantaan as en cheemisk element mä det ufkörtang La an det atoomnumer 57. Hat as en auergungsmetal.
Elementen mä atoomtaalen faan 57 bit 71 san Lantanoiden (iar: Lantaniiden).
-
-
Elektroonenskel
-
Rian lantaan
- ↑ Harry H. Binder: Lexikon der chemischen Elemente. S. Hirzel Verlag, Stuttgart 1999, ISBN 3-7776-0736-3.
- ↑ A taalen uun't infobox kem miast faan www.webelements.com (Lanthan).
- ↑ 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. 1219.
- ↑ 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.
- ↑ 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.
- ↑ 7,0 7,1 Iindraanj tu Lanthan uun't GESTIS-dootenbeenk faan't IFA, ufrepen di 30. April 2017 (mä JavaScript).