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Actinide

f-block chemical elements
Location of actinides on the periodic table

The actinide series is the 15 chemical elements between actinium and lawrencium on the periodic table. They have the atomic numbers between 89 - 103. The actinide series is named after actinium. All of the elements are radioactive. Uranium is the most common natural actinide, and thorium second.

The actinide elementsEdit

Atomic Number Name Symbol Picture
89 Actinium Ac
90 Thorium Th  
91 Protactinium Pa
92 Uranium U  
93 Neptunium Np  
94 Plutonium Pu  
95 Americium Am  
96 Curium Cm
97 Berkelium Bk  
98 Californium Cf  
99 Einsteinium Es  
100 Fermium Fm
101 Mendelevium Md
102 Nobelium No
103 Lawrencium Lr