'S e eileamaid cheimigeach a tha ann an gadolinium le samhla Gd agus àireamh atamach 64.

Gadolinium
Gadolinium-4.jpg
Gadolinium
Clàr pillteach
HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBa*HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRa**RfDbSgBhHsMtDsRgCnNhFlMcLvTsOg
*LaCePrNdPmSmEuGdTbDyHoErTmYbLu
**AcThPaUNpPuAmCmBkCfEsFmMdNoLr
Buadhan
SamhlaGd
Àireamh64
Ùine6
Blocaf
SeòrsaLantanach
Buadhan stuthach
DathAirgead-gheal
Teothachd leaghaidh1585 K ​(1312 °C, ​2394 °F)
Teothachd goilidh3273 K ​(3000 °C, ​5432 °F)
Buadhan atamach
Tomad atamach/Da157.25(3)[1]
Comh-dhealbhadh atamach[Xe] 4f7 5d1 6s2
Cor ogsaideachaidh+1, +2, +3
1mh lùth aidheonachaidh/kJ mol–1593.4 kJ/mol
2mh lùth aidheonachaidh/kJ mol–11170 kJ/mol
3mh lùth aidheonachaidh/kJ mol–11190 kJ/mol

'S e meatailt bof agus lantanach a tha ann. Mar na lantanaich eile, tha an aidheon +3 as cudromaiche ann an a cheimigeachd aige.

Eachdraidh

Ann an 1880 lorg Jean Charles Galissard de Marignac, ceimigear às an Eilbheis, loidhnean ùr ann an speactram samarskit agus dh'ainmich e an ogsaid ùr Yα.[2] Dhearbhaich William Crookes gum bu eileamaid ùr a bha ann an Yα agus dh'ainmich Paul-Émile Lecoq de Boisbaudran e "gadolinium" air a' cheimigear Fionnlannach Johan Gadolin.[3]

Ann an 1930 rinn Félix Trombe gadolinium fìor-ghlan.

Cleachdadh

Cleachdar gadolinium ann an niùtron-sgiathan ann an readhactaran niùclasach agus mar stuth iomsgaraidh ann an MRI.

Iomraidhean

  1. http://www.ciaaw.org/atomic-weights.htm
  2. http://gallica.bnf.fr/ark:/12148/bpt6k3047v.image.f895
  3. http://gallica.bnf.fr/ark:/12148/bpt6k3058f.image.f900

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