Promethium - Leonardo Gramajo / Kelly Lavelle
Promethium is a radioactive element that can be found in glowing paint and in guided missiles. Promethium is a very rare lanthanide that is very valuable, it has an atomic weight of 144.913 and an atomic number of 61.
Name |
Promethium |
Symbol |
Pm |
Atomic Number |
61 |
Atomic Mass |
144.913 |
Number of Protons |
61 |
Number of Electrons |
61 |
Number of Neutrons |
84 |
Melting Point |
1,908 Degrees Farenheit |
Boiling Point |
5,432 Degrees Farenheit |
Normal Phase |
Solid |
Family |
Lathanide |
Period |
6 |
Group |
N/A |
Origin of Name |
Prometheus, in Greek mythology who stole fire from the gods and gave it to men. |
Date and Place of Discovery |
In 1944 at the Clinton Laboratories in Oak Ridge Tennesse as part of the Manhattan Project, but documented or claimed until 1946. |
Interesting Facts |
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Common Uses |
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