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Americium |
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Symbol: Am
Atomic Number: 95
Mass: (243.0)
Melting Point: 994.0 C
Boiling Point: 2607.0 C
Number of Protons/Electrons: 95
Number of Neutrons: 148
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 13.6 g/cm3
Color: Unknown
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Number of Energy Levels: 7
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Isotope | Half Life |
Am-240 | 2.1 days |
Am-241 | 432.7 years |
Am-242 | 16.0 hours |
Am-242m | 141.0 years |
Am-243 | 7370.0 years |
Am-244 | 10.1 hours |
Am-245 | 2.1 hours |
Am-246 | 39.0 minutes |
Date of Discovery: 1945
Discoverer: G.T. Seaborg
Name Origin: After America
Uses: Smoke Detectors
Obtained From: Man-made