For faster navigation, this Iframe is preloading the Wikiwand page for Bohrium.

Bohrium

107 seaborgiumbohriumhassium
Re

Bh

(Uhu)
Algemeen
Naam, simbool, getal bohrium, Bh, 107
Chemiese reeks oorgangsmetaal
Groep, periode, blok 7, 7, d
Atoommassa (270) g/mol
Elektronkonfigurasie voorspel;[1] [Rn] 5f14 6d5 7s2
Elektrone per skil voorspel; 2, 8, 18, 32, 32, 13, 2
CAS-registernommer 54037-14-8
Fisiese eienskappe
Toestand voorspel;[2] vastestof
Digtheid (naby k.t.) voorspel; 37,1 g/cm³
Atoomeienskappe
Oksidasietoestande 7, (5), (4), (3)[3][4]
Ionisasie-energieë 1ste: 742,9 kJ/mol
2de: 1 688,5 kJ/mol
3de: 2 566,5 kJ/mol
Geskiedenis
Ontdek 1981
Ontdek deur Sentrum vir Swaarioonnavorsing,
Darmstadt, Duitsland
Genoem na Niels Bohr
Datum van naam 1997
Vorige naam unnilseptium (Uns)
Vernaamste isotope
Hoofartikel: Isotope van bohrium
iso NV halfleeftyd VM VE (MeV) VP
274Bh sin 40 s α 8,8 270Db
272Bh sin 10 s α 9,02 268Db
271Bh sin 1 s α 9,35 267Db
Portaal Chemie

Bohrium is ’n superswaar, kunsmatige element met die atoomgetal 107 en simbool Bh. Dit kom nie in die natuur voor nie, kan net in ’n laboratorium vervaardig word en is radioaktief. Die stabielste bekende isotoop, bohrium-270, het ’n halfleeftyd van ongeveer 61 sekondes.

Die element is genoem na die Deense fisikus Niels Bohr.

Op die periodieke tabel lê dit in die d-blok, in groep 7 en periode 7. Dit is dus die vyfde lid van die 6d-reeks oorgangsmetale. Chemiese eksperimente het bevestig dit tree op soos die swaarder homoloog van renium net bo dit. Sy eienskappe is net gedeeltelik vasgestel, maar dit stem baie ooreen met dié van ander elemente in groep 7.

Verwysings

[wysig | wysig bron]
  1. Johnson, E.; Fricke, B.; Jacob, T.; Dong, C. Z.; Fritzsche, S.; Pershina, V. (2002). "Ionization potentials and radii of neutral and ionized species of elements 107 (bohrium) and 108 (hassium) from extended multiconfiguration Dirac–Fock calculations". The Journal of Chemical Physics. 116: 1862. Bibcode:2002JChPh.116.1862J. doi:10.1063/1.1430256.
  2. Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11). Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104.
  3. Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean (reds.). The Chemistry of the Actinide and Transactinide Elements (3de uitg.). Dordrecht, Nederland: Springer Science+Business Media. ISBN 1-4020-3555-1.
  4. Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. 21: 89–144. doi:10.1007/BFb0116498. Besoek op 4 Oktober 2013.

Eksterne skakels

[wysig | wysig bron]


H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
Alkalimetale Aardalkalimetale Lantaniede Aktiniede Oorgangsmetale Hoofgroepmetale Metalloïde Niemetale Halogene Edelgasse Chemie onbekend
{{bottomLinkPreText}} {{bottomLinkText}}
Bohrium
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?