- Fermium (Fm) is a rare earth element with atomic weight 257 which has melting point 1800K.
- Eighth discovered transuranium element in the actinide series.
- An element 254Fm and its heavier isotopes can be produced by intense neutron irradiation of lower elements such as plutonium using a process of successive neutron capture interspersed with beta decays until these mass & atomic numbers are reached.
- After Production, fermium is separated from other actinides & from lanthanoid fission products by ion exchange chromatography.
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