atomic number 94

Noun atomic number 94 has 1 sense

• atomic number 94(n = noun.substance) plutonium, pu - a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239; Array
is a kind of chemical element, element
has particulars: plutonium 239