Prometium

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'S e eileamaid cheimigeach a tha ann am prometium le samhla Pr agus àireamh atamach 61. 'S e lantanach glè rèidio-bheò gun iosatòp seasmhach a tha ann.

Prometium
Promethium spectrum visible.png
Speactram faicsinneach prometium.
Clàr pillteach
HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBa*HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRa**RfDbSgBhHsMtDsRgCnNhFlMcLvTsOg
*LaCePrNdPmSmEuGdTbDyHoErTmYbLu
**AcThPaUNpPuAmCmBkCfEsFmMdNoLr
Buadhan
SamhlaPr
Àireamh61
Ùine6
Blocaf
SeòrsaLantanach
Buadhan stuthach
DathAirgead-gheal
Teothachd leaghaidh1315 K ​(1042 °C, ​1908 °F)
Teothachd goilidh3273 K ​(3000 °C, ​5432 °F)
Buadhan atamach
Tomad atamach/DaChan eil iosatòp seasmhach ann[1]
Comh-dhealbhadh atamach[Xe] 4f5 6s2
Cor ogsaideachaidh+3
1mh lùth aidheonachaidh/kJ mol–1540
2mh lùth aidheonachaidh/kJ mol–11050
3mh lùth aidheonachaidh/kJ mol–12150

Rinneadh caractarachd ri 38 iosatòpaichean de phrometium. Tha prometium-147, le leth-bheatha 2.6234 bliadhna, as cudromaiche, agus prometium-145, le leth-bheatha 17.7 bliadhna, agus prometium-146, le leth-bheatha 5.53 bliadhna, as seasmhaiche.

Eachdraidh

Ann an 1945 rinn Jacob A. Marinsky, Lawrence E. Glendenin and Charles D. Coryell ann an toraidhean sgoltaidh uranium. Dh'ainmich Grace Mary Coryell, bean Coryell, e air Prometeus ann am fionn-sgeul Greugach.

Cleachdadh

Cleachdar prometium-147 ann am peantan solasach agus bataraidhean atamach. Tha fosfor ann am peant a tha a' sùigheadh gathachadh-β às am prometium agus a' cruthachadh solas.

Iomraidhean

  1. http://www.ciaaw.org/atomic-weights.htm

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