Menu
Home
Explore
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Sign In
Science
Chemistry
Chemical elements
f-Block
Actinides
Actinides
Actinide
F-block chemical elements
Actinium
Chemical element with atomic number 89
Americium
Chemical element with atomic number 95
Berkelium
Chemical element with atomic number 97
Californium
Chemical element with atomic number 98 (Cf)
Curium
Chemical element with atomic number 96 (Cm)
Einsteinium
Chemical element with atomic number 99
Fermium
Chemical element with atomic number 100
Mendelevium
Chemical element with atomic number 101 (Md)
Neptunium
Chemical element with atomic number 93
Nobelium
Chemical element 102
Plutonium
Chemical element with atomic number 94
Protactinium
Chemical element with atomic number 91 (Pa)
Thorium
Chemical element with atomic number 90
Uranium
Chemical element with atomic number 92
Uranium-235
Isotope of uranium
Uranium-238
Isotope of uranium