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Protactinium
Protactinium

Calcium
Calcium



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Protactinium
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Calcium

Protactinium and Calcium Periodic Table

Periodic Table

Symbol

Pa
Ca

Group Number

32
0 17
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Period Number

74
2 7
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Block

f block
s block

Element Family

Actinide
Alkaline Earth

CAS Number

74401337440702
7429905 54386242
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Space Group Name

I4/mmm
Fm_ 3m

Space Group Number

139.00225.00
11 276
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