Elements. The Lanthanides are: Atomic No.575859606162636465666768697071NameLaCePrNdPmSmEuGdTbDyHoErTmYbLu The Actinides are:Atomic No.8990919293949596979899100101102103NameAcThPaUNpPuAmCmBkCfEsFmMdNoLr
Uranium and Plutonium are the only elements from the Actinides series that occur naturally on Earth, though they are rare.
Neptunium is a member of the actinides group.
Thorium, atom no. 90, just after Actinium (89)
alkaline metals, alkaline earth metals, lanthanides and actinides and metals in mixed groups
Yes. All of the actinides are radioactive.
All actinides are radioactive elements and some are man made.
All actinides are radioactive elements and some are man made.
radioactive
Thorium (90)
The actinides
mosley
importance abuot actinides
Americium is and actinide.
No, it is a metal, as all the other actinides are.
The actinides
They are F-block elements