Éuropium

Éuropium, 63Éu
Éuropium
ᵒehuropiyum·
Pabaosan/jʊəˈrpiəm/ (yoor-OH-pee-əm)
Cingakanpetak pérak, antuk warna kuning lémlém;[1] sakéwanten kapah kacingak tanpa pagentosan warna oksida
Éuropium ring tabél périodik
Hidrogén Hélium
Litium Bérilium Boron Karbon Nitrogén Oksigén Fluorin Néon
Natrium Magnésium Aluminium Silikon Phosfor Urirang Klorin Argon
Potasium Kalsium Skandium Titanium Vanadium Kromium Mangan (datu) Wesi Kobalt Nikel Temaga Séng Gallium Gérmanium Arsenik Sélénium Brom Kripton
Rubidium Strontium Ittrium Zirkonium Niobium Molibdénum Téknésium Ruthénium Rhodium Palladium Pérak Kadmium Indium Timah Antimoni Téllurium Yodium Xénon
Sésium Barium Lanthanum Sérium Praséodimium Néodimium Prométhium Samarium Éuropium Gadolinium Terbium Disprosium Holmium Érbium Thulium Itterbium Lutésium Hafnium Tantalum Tungstén Rhénium Osmium Iridium Platinum Mas Rasa (datu) Thallium Timbal Bismuth Polonium Astatin Radon
Fransium Radium Aktinium Thorium Protaktinium Uranium Néptunium Plutonium Amérisium Curium Berkélium Kalifornium Éinsteinium Fermium Méndelevium Nobélium Lawrénsium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnérium Darmstadtium Roéntgénium Kopernikium Nihonium Flérovium Moskovium Livermorium Ténnessin Oganésson


Éu

Am
samariuméuropiumgadolinium
Wilangan atom (Z)63
Watekn/a
Périodepériode 6
Blok  blok-f
Konpigurasi éléktron[] 4f7 6s2
Éléktron per kulit2, 8, 18, 25, 8, 2
Cecirén pisik
Pase ring STPpadet
Titik lebur1099 K ​(826 °C, ​1519 °F)
Titik didih1802 K ​(1529 °C, ​2784 °F)
Kapadetan (nampek s.r.)5.244 g/cm3
ri kala éncéh (ring t.l.)5.13 g/cm3
Panes fusi9.21 kJ/mol
Panes panguapan176 kJ/mol
Kapasitas panes molar27.66 J/(mol·K)
Tekanan uap
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 863 957 1072 1234 1452 1796
Cecirén atom
Paindikan oksidasi0,[2] +2, +3 (oksida basa tenga)
Kaéléktronégatipanskala Pauling: 1.2
Wasa ionisasi
  • ka-1: 547.1 kJ/mol
  • ka-2: 1085 kJ/mol
  • ka-3: 2404 kJ/mol
Jeriji atomémpiris: 180 pm
Jeriji kovalén198±6 pm
Cecirén liyanan
Rupa alamiprimordial
Struktur kristalkubus mapusat badan (bcc)
Body-centered cubic crystal structure for éuropium
Ékspansi térmalpoly: 35.0 µm/(m⋅K) (ring r.t.)
Konduktivitas térmalest. 13.9 W/(m⋅K)
Resistivitas listrikpoly: 0.900 µΩ⋅m (at r.t.)
bacakan magnétikparamagnétik[3]
Karentanan magnétik molar+34000.0×10−6 cm3/mol[4]
Modulus Young18.2 GPa
Modulus Shear7.9 GPa
Modulus Bulk8.3 GPa
Rasio Poisson0.152
Kakatosan Vickers165–200 MPa
Nomor CAS7440-53-1
Lelintihan
Pangarananmawit Éropa
Panemuan miwah isolasi kapertamaEugène-Anatole Demarçay (1896, 1901)
Isotop utama éuropium
Iso­top Kalimpahan Paruh-idup (t1/2) Mode paluruhan Pro­duk
150Éu syn 36.9 y ε 150Sm
151Éu 47.8% 5×1018 y α 147Pm
152Éu syn 13.54 y ε 152Sm
β 152Gd
153Éu 52.2% tegteg
154Éu syn 8.59 y β 154Gd
155Éu syn 4.76 y β 155Gd
Kategori:Éuropium
| pustaka

Éuropium silih tunggil datu kimia antuk simbol Éu miwah wilangan atom 63. Éuropium punika lantanida pinih réaktif kauningin, patut kasimpan ring cairan inert antuk ngsaibin saking oksigén atmosfir utawi kaayuban. Éuropium taler lantanida pinih bélék, mawinan nyidayang pényok nganggé kuku miwah aluh kagetep nganggén tiuk. Ri kala oksidasi kaicalang, logam kacingak putih nyalang. Éuropium kaisolasi warsa 1901 miwah kaaranin banua Éropa.[5] Manados anggota khas saking dérét lantanida, éuropium ketah nyané ring paindikan oksidasi +3, menawi ketah masih ring paindikan oksidasi +2. Samian senyawa europium antuk wilangan oksidasi +2 akedik réduksi. Europium nénten mawiguna ring biologis sané signifikan miwah rélatif nénten nubain pantaraning logam baat liyanana. Makéhan éuropium kaanggén luruhan senyawa éuropium. Éuropium dados silih tunggil datu tanah langka pinih langka ring Gumi.[6]

Pustaka

  1. Mal:Greenwood&Earnshaw
  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. 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.
  4. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
  5. "Periodic Table: Europium". Royal Society of Chemistry.
  6. Stwertka, Albert. A Guide to the Elements, Oxford University Press, 1996, p. 156. ISBN 0-19-508083-1

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