Actinides
Name SymbolAtomic numberAtomic weightBoiling pointMelting PointDensity
Thorium Th 90 232.0 4788 C 1755 C 11.7 g/cm3
Protactinum Pa 91 231.0 - 1572 C 15.4 g/cm3
Uranium U 92 238.0 4134 C 1135 C 18.95 g/cm3
Neptunium Np 93 237.0 3902 C 639 C 20.3 g/cm3
Plutonium Pu 94 (244) 3230 C 640 C 19.8 g/cm3
Americium Am 95 (243) - 1176 C 13.6 g/cm3
Curium Cm 96 (247) - 1345 C 13.5 g/cm3
Berkelium Bk 97 (247) - 1050 C -
Californium Cf 98 (251) - 900 C -
Einsteinium Es 99 (252) - - -
Fermium Fm 100 (257) - - -
Mendelevium Md 101 (258) - - -
Nobelium No 102 (259) - - -
Lawrencium Lr 103 (262) - - -

notes: The Actinides are similar to Actinium.

[Elements by Group] [Elements by Atomic Number] [Elements by Name] [The Table] [Title Page]
By the way, these pages are still under construction, so if there are any errors, links to the wrong places, or non-functioning links, please e-mail me at 104742.1507@compuserve.com, or if you are on Compuserve, my member ID is (big surprise!) 104742,1507.

1