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Protactinium
Protactinium

Thulium
Thulium



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Protactinium
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Protactinium and Thulium Periodic Table

Periodic Table

Symbol

Pa
Tm

Group Number

33
0 17
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Period Number

76
2 7
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Block

f block
f block

Element Family

Actinide
Lanthanide

CAS Number

74401337440304
7429905 54386242
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Space Group Name

I4/mmm
P63/mmc

Space Group Number

139.00194.00
11 276
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