Symbol: Fm

Atomic Number: 100

Atomic Weight: (257)

Fermium is a synthetic element with atomic number 100 and the symbol Fm. Fm is part of the actinide series. Of all the elements that are formed by bombarding light elements with neutrons, it is the heaviest. It has 19 isotopes. The isotope fermium-257 has the longest half-life of all - 100.5 days. This element is highly radioactive, toxic, and risky to handle.

The element Fm was named after the nuclear physicist Enrico Fermi. It is one of the elements that were found to be by-products of the hydrogen bomb explosion in 1952. It is a typical actinide chemically, found in...Read More