'S e eileamaid cheimigeach a tha ann an calcium le samhla Ca agus àireamh atomach 20.

Calcium
Calcium unter Argon Schutzgasatmosphäre.jpg
Calcium fo àile argoin.
Clàr pillteach
HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBa*HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRa**RfDbSgBhHsMtDsRgCnNhFlMcLvTsOg
*LaCePrNdPmSmEuGdTbDyHoErTmYbLu
**AcThPaUNpPuAmCmBkCfEsFmMdNoLr
Buadhan
SamhlaCa
Àireamh20
BuidheannMeatailtean talmhaidh alcaileach (2, IIa)
Ùine4
Blocas
SeòrsaMeatailtean talmhaidh alcaileach
Buadhan stuthach
DathGeal–liath
Buadhan atamach
Tomad atamach/Da40.078(4) g mol–1
Comh-dhealbhadh atamach[Ar] 4s2
Cor ogsaideachaidh+2,+1
1mh lùth aidheonachaidh/kJ mol–1589.8 kJ mol–1
2mh lùth aidheonachaidh/kJ mol–11154.4 kJ mol–1
3mh lùth aidheonachaidh/kJ mol–14912.4 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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