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Tantalum and Actinium Periodic Table
f
Tantalum
Actinium
Actinium and Tantalum in Periodic Table
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Periodic Table
Symbol
Ta
Ac
Group Number
5
13
Not Available
Period Number
6
7
Block
d block
f block
Element Family
Transition Metal
Actinide
CAS Number
7440257
99+
7440348
99+
Space Group Name
Im_ 3m
Fm_ 3m
Space Group Number
229.00
1
225.00
2
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