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Protactinium
Protactinium
☒

Nihonium
Nihonium
☒



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Protactinium
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Nihonium

Protactinium and Nihonium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Pa
3
7
f block
Actinide
7440133
I4/mmm
139.00
 
Nh
13
7
p block
Probably Post-​Transition
54084707
-
194.00