Calcium
Izinto 20 · 40.078 u
I-calcium yi-metal eninzi kakhulu emzimbeni womntu, ibalulekile kumathambo, kumazinyo kunye nokubonakalisa kweeseli.
Iimpawu Zobuchopho
| Ii-atom | 40.078 u |
| Uxinano | 1.55 g/cm³ |
| Incopho yokubila: | 1115.0 K |
| Incopho yokubila: | 1757.0 K |
| Ukubonakala | Umbala ongwevu, omnyama |
| I-State at Room Temp | I-Solid |
Iimpawu zekhemikhali
| Electronegativity | 1.0 (I-Polygon) |
| I-Ionization Energy | 589.8 kJ/mol |
| Electronegativity: | 2.37 kJ/mol |
| Iindawo zokuthambisa | +1, +2 |
Iimpahla zephetshana elichazayo:
| Uqwalaselo lwe Electron | [Ar] 4s2 |
| Atomic radius: | 197.0 pm |
| I-Covalent Radius | 176.0 pm |
| I-Van der Waals Radius | 231.0 pm |
Ukufumana kwakhona
| Ifunyenwe Ngu | Humphry Davy |
| Unyaka Wophando | 1808 |
| Indawo | London, England |
| Igama Elilandelayo | Latin 'calx' ithetha ukuba i lime |
I-About Calcium
I-Calcium yi-metallic yehlabathi ethambileyo, emhlophe emhlophe kunye ne-elementi yesihlanu eninzi kakhulu kwi-crust yehlabathi. Ibalulekile kumathambo, amazinyo, kunye ne-shell. I-Calcium iion isebenza njengemolekyuli ebalulekileyo yokuphawula kwinkqubo yeselula.
Iinkqubo
Isinyithi kunye nekhonkrithi, i-plaster yeParis, ukulungisa intsimbi, i-anti-acid, izithako zokutya, kunye nokunyanga amanzi.
Inyathelo 1:
Iqulatho lethu liquka malunga ne-1 kg ye-calcium, i-99% ifumaneka kumathambo namazinyo. Iqulatho lethu litshintsha malunga neminyaka emihlanu nganye.
I-Isotopes
| Inani le-Mass | Uninzi | Ixesha eliphakathi | Iqinile |
| 40 | 0.96941% | - | Ewe |
| 42 | 0.00647% | - | Ewe |
| 44 | 0.02086% | - | Ewe |
Uqwalaselo lwe Electron
[Ar] 4s2