Tantalum and Americium Periodic Table
Periodic Table
Symbol
Ta
Am
Group Number
5
13
Not Available
Period Number
6
7
Block
d block
f block
Element Family
Transition Metal
Actinide
CAS Number
7440257
99+
7440359
99+
Space Group Name
Im_ 3m
P63/mmc
Space Group Number
229.00
1
194.00
5
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