Lanthanum, 57 La Pabaosan (LAN -thə-nəm ) Cingakan petak kapérakan Bobot atom standar A r, std (La) 7002138905470000000♠ 138.90547 (7)[ 1]
Wilangan atom (Z ) 57 Watek n/a Période période 6 Blok blok-f Konpigurasi éléktron [Xé ] 5d1 6s2 Éléktron per kulit 2, 8, 18, 18, 9, 2 Pase ring STP padet Titik lebur 1193 K (920 °C, 1688 °F) Titik didih 3737 K (3464 °C, 6267 °F) Kapadetan (nampek s.r. ) 6.162 g/cm3 ri kala éncéh (ring t.l. ) 5.94 g/cm3 Panes fusi 6.20 kJ/mol Panes panguapan 400 kJ/mol Kapasitas panes molar 27.11 J/(mol·K) Tekanan uap (ékstrapolasi)
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
2005
2208
2458
2772
3178
3726
Paindikan oksidasi 0,[ 2] +1,[ 3] +2, +3 (oksida basa kuat) Kaéléktronégatipan skala Pauling: 1.10 Wasa ionisasi ka-1: 538.1 kJ/mol ka-2: 1067 kJ/mol ka-3: 1850.3 kJ/mol Jeriji atom émpiris: 187 pm Jeriji kovalén 207±8 pm Garis spéktral saking lanthanumRupa alami primordial Struktur kristal susunan padat heksagon ganda (dhcp) Kagelisan swara pales tipis 2475 m/s (ring 20 °C) Ékspansi térmal α, poly: 12.1 µm/(m⋅K) (ring s.r. ) Konduktivitas térmal 13.4 W/(m⋅K) Resistivitas listrik α, poly: 615 nΩ⋅m (ring s.r. ) bacakan magnétik paramagnétik [ 4] Karentanan magnétik molar 6996118000000000000♠ +118.0× 10−6 cm3 /mol (298 K)[ 5] Modulus Young rupa α: 36.6 GPa Modulus Shear rupa α: 14.3 GPa Modulus Bulk rupa α: 27.9 GPa Rasio Poisson rupa α: 0.280 Kakatosan Mohs 2.5 Kakatosan Vickers 360–1750 MPa Kakatosan Brinell 350–400 MPa Nomor CAS 7439-91-0 Panemuan Carl Gustaf Mosander (1838)
Kategori:Lanthanum | pustaka
La:
ring
itung saking C
bina
parihindik
pus
C
920
—
—
K
1193
1190
3
delta
F
1688
1690
-2
delta
présisi maks
0
WD
String Module Error: Target string is empty
dagingan
C: 920, K: 1193, F: 1688
pabligbagan
La:
ring
itung saking C
bina
parihindik
pus
C
3464
—
—
K
3737
3737
0
F
6267
6267
0
présisi maks
0
WD
String Module Error: Target string is empty
dagingan
C: 3464, K: 3737, F: 6267
pabligbagan
Pustaka
Pustaka pacang tampil ring suratan, menawi lis puniki wantah tampil ring kaca puniki.
↑ Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry . 88 (3): 265–91. doi :10.1515/pac-2015-0305 .
↑ Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev . 22 : 17–24. doi :10.1039/CS9932200017 . and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry . 688 (1–2): 49–55. doi :10.1016/j.jorganchem.2003.08.028 .
↑ La(I), Pr(I), Tb(I), Tm(I), and Yb(I) have been observed in MB8 − clusters; see Li, Wan-Lu; Chen, Teng-Teng; Chen, Wei-Jia; Li, Jun; Wang, Lai-Sheng (2021). "Monovalent lanthanide(I) in borozene complexes" . Nature Communications . 12 : 6467. doi :10.1038/s41467-021-26785-9 .
↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (édisi ka-86th). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5 .
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics . Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4 .
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