Calcium
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'S e eileamaid cheimigeach a tha ann an calcium le samhla Ca agus àireamh atomach 20.
| Calcium | |
|---|---|
 | |
| Calcium fo àile argoin. | |
| Buadhan | |
| Samhla | Ca |
| Àireamh | 20 |
| Buidheann | Meatailtean talmhaidh alcaileach (2, IIa) |
| Ùine | 4 |
| Bloca | s |
| Seòrsa | Meatailtean talmhaidh alcaileach |
| Buadhan stuthach | |
| Dath | Geal–liath |
| Buadhan atamach | |
| Tomad atamach/Da | 40.078(4) g mol–1 |
| Comh-dhealbhadh atamach | [Ar] 4s2 |
| Cor ogsaideachaidh | +2,+1 |
| 1mh lùth aidheonachaidh/kJ mol–1 | 589.8 kJ mol–1 |
| 2mh lùth aidheonachaidh/kJ mol–1 | 1154.4 kJ mol–1 |
| 3mh lùth aidheonachaidh/kJ mol–1 | 4912.4 kJ mol–1 |
'S e meatailt talmhaidh alcaileach a tha ann.
Taisgealadh
Ann an 1808 rinn Humphry Davy calcium fìor-ghlan nuair a chuir e sruth dealain tro mheasgachadh aol agus mearcair ogsaid (HgO).
Geòlas
Tha ataman calcium ann an aol (haidrogsaidean an calcium), aol-beò (CaO, calcium ogsaid) agus cailc (CaCO3).
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