Similar term(s): Pu.
Plutonium is a heavy, man-made, radioactive metallic element. The most
important isotope is Pu-239, which has a half-life of 24 000
years. Pu-239 can be used in reactor fuel and is the primary isotope in nuclear
In the context of Chernobyl, an important radioisotope of Plutonium is
Pu-241, which has a half-life of 14.4 years and decays into
All isotopes of plutonium are readily absorbed by the bones and can be lethal
depending on the dose and duration of exposure.
Source: GreenFacts, based on CDC
Glossary of Radiological
Americium - Element
To read about this term in context:
GreenFacts Summary on the Chernobyl Nuclear Accident: