Gadolinium
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'S e eileamaid cheimigeach a tha ann an gadolinium le samhla Gd agus àireamh atamach 64.
| Gadolinium | |
|---|---|
 | |
| Gadolinium | |
| Buadhan | |
| Samhla | Gd |
| Àireamh | 64 |
| Ùine | 6 |
| Bloca | f |
| Seòrsa | Lantanach |
| Buadhan stuthach | |
| Dath | Airgead-gheal |
| Teothachd leaghaidh | 1585 K (1312 °C, 2394 °F) |
| Teothachd goilidh | 3273 K (3000 °C, 5432 °F) |
| Buadhan atamach | |
| Tomad atamach/Da | 157.25(3)[1] |
| Comh-dhealbhadh atamach | [Xe] 4f7 5d1 6s2 |
| Cor ogsaideachaidh | +1, +2, +3 |
| 1mh lùth aidheonachaidh/kJ mol–1 | 593.4 kJ/mol |
| 2mh lùth aidheonachaidh/kJ mol–1 | 1170 kJ/mol |
| 3mh lùth aidheonachaidh/kJ mol–1 | 1190 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
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