La
Lanthanide inonziwo lanthanide series, iyo inoshandiswa mukamera lens uye catalysts.
Maitiro ekushandisa
| Atomic radius: | 138.91 u |
| Kuomarara | 6.145 g/cm³ |
| Kutonhora Point | 1193.0 K |
| Kutonhora Point | 3737.0 K |
| Kuoneka | Silvery- white metallic |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 1.1 (Pauling) |
| 1st Ionization Energy | 538.1 kJ/mol |
| Electronegativity: | 53.0 kJ/mol |
| Oxygen | +2, +3 |
Atomic Properties
| Kuisa Kugadzirisa | [Xe] 5d1 6s2 |
| Atomic radius: | 187.0 pm |
| Covalent Radius | 207.0 pm |
| Van der Waals radius | 240.0 pm |
Discovery
| Yakawanikwa ne | Carl Gustaf Mosander |
| Kuonekwa kwegore | 1839 |
| _Panzvimbo: | Stockholm, Sweden |
| Akapihwa zita mushure me | ChiGreek 'lanthanein' chinoreva kugara uchichengetwa |
Nezve Lanthanide
Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly. It is found in rare earth minerals like monazite and bastnaesite. It has no biological role.
Mashandisiro & Maapplication
Kamera uye telescope malensi, catalytic cracking mu petrochemical, bhatiri electrodes, uye lighter flints.
Nhoroondo yemitambo
Lanthanide yaive 'yakachengetwa' mukati mecerium oxide kwemakore 36 mushure mekuparadzwa - kunyatsoenderana nekuti zita rayo rinoreva 'kugara rakachengetwa'.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 138 | 0.0009% | - | _Ndiani |
| 139 | 0.9991% | - | _Ndiani |
Kuisa Kugadzirisa
[Xe] 5d1 6s2