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physical object > natural object > collection of particles > phase of matter > solid > metal > actinide > transuranium element > americium > americium 239 |
americium 239 comparison table |
Subject | has nuclear spin | has decay mode | is a kind of | has number of neutron | has definition | has number of nucleon | has half life | is an instance of | has symbol | has atomic mass |
---|---|---|---|---|---|---|---|---|---|---|
americium | radioactive element | radioactive silvery metal which does not occur naturally | Am | |||||||
americium 239 | I = 5/2- | γ | 144 | 239 | 11.9 hours | americium | 239Am | 239.053016 |
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