Ca
Kalsiyum
Qaybta 20 · 40.078 u
Kalsiyum waa metal ugu badan ee jidhka aadanaha, muhiim u ah lafdhabarta, ilkaha, iyo calaamadaha cell.
Eeg astaamaha
| Atomic mass | 40.078 u |
| Cidhiidhi | 1.55 g/cm³ |
| Natiijooyinka | 1115.0 K |
| Natiijooyinka | 1757.0 K |
| Muuqaalka | Dull khafiif ah, lacag metalic |
| Xaaladda heerkulka qolka | Cidhiidhi |
Eegista
| Electronegativity | 1.0 (Pauling) |
| 1st Ionization | 589.8 kJ/mol |
| Istaraatiijiyad | 2.37 kJ/mol |
| Nidaamka | +1, +2 |
_Cusub:
| Nidaamka | [Ar] 4s2 |
| Awooda | 197.0 pm |
| Xaraf | 176.0 pm |
| Van der Waals | 231.0 pm |
Dib u eegista
| La Ogaaday | Humphry Davy |
| Sannadka la helay | 1808 |
| _Meel | London, England |
| Magacaabista | Laanqayrta Cas |
_Warbixinta Kalsiyum
Kalsiyum waa bir bir ah, casaan-caddaan ah oo leh alkaline iyo qaybta ugu badan ee 5aad ee dhulka dhulka. Waa muhiim lafdhabarta, ilkaha, iyo qashinka. Kalsiyum iones waxay u adeegaan sidii molekiulyo muhiim ah oo calaamadeyn ah oo ku jira hababka unugyada.
Barnaamijyada
Siment iyo concrete, plaster Paris, birta soo saarka, antacids, cunto dheeraad ah, iyo daaweynta biyaha.
Xaqiiqo xiiso leh
Jidhka aadanaha waxaa ku jira 1 kg oo kalsiyum ah, 99% lafdhabarta iyo ilkaha. Jidhkaaga waxaa lagu bedelaa 10 sano kasta.
Isotoobyo
| Tirada | Tirada | Half-Life | Xasiloon |
| 40 | 0.96941% | - | Haa |
| 42 | 0.00647% | - | Haa |
| 44 | 0.02086% | - | Haa |
Nidaamka
[Ar] 4s2