fermium

Thân thiện

A scientist carefully handles a sample of fermium in a secure laboratory.

Definition

Noun: 1. A radioactive transuranic metallic element: A synthetic, highly radioactive metallic chemical element with the symbol Fm and atomic number 100. It is produced artificially, typically by bombarding plutonium with neutrons in nuclear reactors or during nuclear explosions, and is part of the actinide series.

Usage Examples

• Noun:
  • The discovery of fermium was announced in 1953.
  • Fermium isotopes have very short half-lives, making the element difficult to study.
  • Scientists produced trace amounts of fermium by neutron irradiation of plutonium.

Advanced Usage

• Scientific Context: The term is used almost exclusively in nuclear chemistry, physics, and related scientific fields. It is not used in everyday language.
  • The research paper detailed the chemical properties of fermium-255.

Variants and Related Words

• Fermium-257 (²⁵⁷Fm): The isotope of fermium with the longest known half-life.
• Actinide: The series of chemical elements to which fermium belongs.

Synonyms

• Element 100
• Fm (Chemical symbol)

Notes on Meaning

• The element is named after the physicist Enrico Fermi.
• As a transuranic element, all isotopes of fermium are unstable and radioactive.
• Due to its scarcity and radioactivity, fermium has no applications outside of basic scientific research.

Học thuật

Noun

1. a radioactive transuranic metallic element produced by bombarding plutonium with neutrons

Từ đồng nghĩa

• Fm
• atomic number 100