Name |
Thulium |
Symbol |
Tm |
Atomic Number |
69 |
Atomic mass |
168.93 amu |
Number of protons |
69 |
Number of Electrons |
69 |
Number of Neutrons |
100 |
Melting Point |
1545 degrees Celcius |
Boiling Point |
1727 degrees Celcius |
Normal Phase |
Solid |
Family |
Rare Earth Metal - Lanthanide |
Period |
6 |
Group |
N/A |
Origin of Name |
From Thule, the ancient name of Scandanavia |
Date & Place of Discovery |
Discovered by Per Teodor Cleve in 1879 in Sweden |
Interesting Facts |
|
Common Uses |
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