F

Fermium

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Quick Reference
Formula / NotationFm
Molecular Weight257
CategoryElements

What is Fermium?

Fermium is a synthetic radioactive actinide named after Enrico Fermi. Also first identified in Ivy Mike test debris in 1952. It is the heaviest element that can be produced in useful amounts by neutron bombardment of lighter elements.

Formula & Notation

Fm

Properties & Characteristics

Appearance: unknown (too little produced). Melting point: 1527 °C (estimated). Density: ~9.71 g/cm³ (estimated).

Uses & Applications

No practical uses. Used only in basic research into the properties of heavy elements.

Safety Information

Highly radioactive. Produced in picogram quantities only. Extreme radiation hazard.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Fermium
Formula Fm
Molecular Weight 257
Category Elements

Frequently Asked Questions

Fermium is a synthetic radioactive actinide named after Enrico Fermi. Also first identified in Ivy Mike test debris in 1952. It is the heaviest element that can be produced in useful amounts by neutron bombardment of lighter elements.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.