Lanthanum
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| Lanthanum | |
|---|---|
| Properties | |
| Atomic symbol | La |
| Atomic number | 57 |
| Classification | Transition Metals |
| Atomic mass | 138.9055 amu |
| Other Information | |
| Date of discovery | 1839 |
| Name of discoverer | Carl Mosander |
| Name origin | From the Greek lanthanein, meaning to lie hidden. |
| Uses | Due to the refractive properties it adds to glass, it is used in expensive camera lenses. Also used in lighter flints, battery electrodes and catalytic converters. |
| Obtained from | Found along with monazite and bastnasite. |