Samarium

Samarium, ₆₂Sm
Samarium; samariyum·
Pabaosan	/səˈmɛəriəm/ (sə-MAIR-ee-əm)
Cingakan	petak kapérakan
Bobot atom standar Ar, std(Sm)	150.36(2)
Samarium ring tabél périodik
	prométhium ← samarium → éuropium
Wilangan atom (Z)	62
Watek	n/a
Période	période 6
Blok	blok-f
Konpigurasi éléktron	[Xé] 4f6 6s2
Éléktron per kulit	2, 8, 18, 24, 8, 2
Cecirén pisik
Pase ring STP	padet
Titik lebur	1345 K (1072 °C, 1962 °F)
Titik didih	2173 K (1900 °C, 3452 °F)
Kapadetan (nampek s.r.)	7.52 g/cm3
ri kala éncéh (ring t.l.)	7.16 g/cm3
Panes fusi	8.62 kJ/mol
Panes panguapan	192 kJ/mol
Kapasitas panes molar	29.54 J/(mol·K)
Cecirén atom
Paindikan oksidasi	0, +1, +2, +3 (oksida basa tenga)
Kaéléktronégatipan	skala Pauling: 1.17
Wasa ionisasi	ka-1: 544.5 kJ/mol ; ka-2: 1070 kJ/mol ; ka-3: 2260 kJ/mol ; ;
Jeriji atom	émpiris: 180 pm
Jeriji kovalén	198±8 pm
	Garis spéktral saking samarium
Cecirén liyanan
Rupa alami	primordial
Struktur kristal	rombohédron
Kagelisan swara pales tipis	2130 m/s (ring 20 °C)
Ékspansi térmal	(s.r.) (α, poli) 12.7 µm/(m⋅K)
Konduktivitas térmal	13.3 W/(m⋅K)
Resistivitas listrik	(s.r.) (α, poli) 0.940 µΩ⋅m
bacakan magnétik	paramagnétik
Karentanan magnétik molar	+1860.0×10−6 cm3/mol (291 K)
Modulus Young	α form: 49.7 GPa
Modulus Shear	α form: 19.5 GPa
Modulus Bulk	α form: 37.8 GPa
Rasio Poisson	α form: 0.274
Kakatosan Vickers	410–440 MPa
Kakatosan Brinell	440–600 MPa
Nomor CAS	7440-19-9
Lelintihan
Pangaranan	mawit mineral samarskite (kaaranin ngeraga olih Vassili Samarsky-Bykhovets)
Panemuan miwah isolasi kapertama	Lecoq de Boisbaudran (1879)
Isotop utama samarium
	Kategori:Samarium; cingak; pabligbagan; uah; \| pustaka

Samarium silih tunggil datu kimia antuk simbol Sm miwah wilangan atom 62. Punika logam kapérakan katos alon kaoksidasi ring udara. Manados anggota khas saking dérét lantanida, samarium ketah nyané kanikayang ring paindikan oksidasi +3. Senyawa samarium(II) taler kauningin, kautama monoksida SmO, monokalkogénida SmS, SmSé dan SmTé, taler samarium(II) iodida. Senyawa ungkur punika agén paréduksi sané ketah ring sintésis kimia. Samarium nénten ngelah kawigunaan biologis sané signifikan menawi wantah ekedik nubain.

Pustaka

↑ 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.
↑ SmB6- cluster anion has been reported and contains Sm in rare oxidation state of +1; see Paul, J. Robinson; Xinxing, Zhang; Tyrel, McQueen; Kit, H. Bowen; Anastassia, N. Alexandrova (2017). "SmB₆^– Cluster Anion: Covalency Involving f Orbitals". J. Phys. Chem. A 2017, 121, 8, 1849–1854. 121 (8): 1849–1854..
↑ 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.

Suratan

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (édisi ka-2nd). Butterworth–Heinemann. ISBN 0080379419.

Pranala jaba

[CIAAW2013-1] 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.

[Cloke1993-2] 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.

[3] SmB6- cluster anion has been reported and contains Sm in rare oxidation state of +1; see Paul, J. Robinson; Xinxing, Zhang; Tyrel, McQueen; Kit, H. Bowen; Anastassia, N. Alexandrova (2017). "SmB₆^– Cluster Anion: Covalency Involving f Orbitals". J. Phys. Chem. A 2017, 121, 8, 1849–1854. 121 (8): 1849–1854..

[magnet-4] 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.

[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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Pengawasan otoritas
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