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Polonium
Polonium

Osmium
Osmium



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Polonium and Osmium Periodic Table

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Periodic Table

Symbol

Po
Os

Group Number

168
0 17
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Period Number

66
2 7
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Block

p block
d block

Element Family

Post-​Transition
Transition Metal

CAS Number

74400867440042
7429905 54386242
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Space Group Name

Pm-3m
P63/mmc

Space Group Number

221.00194.00
11 276
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