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Osmium
Osmium

Polonium
Polonium



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Osmium
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Osmium and Polonium Periodic Table

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Periodic Table

Symbol

Os
Po

Group Number

816
0 17
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Period Number

66
2 7
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Block

d block
p block

Element Family

Transition Metal
Post-​Transition

CAS Number

74400427440086
7429905 54386242
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Space Group Name

P63/mmc
Pm-3m

Space Group Number

194.00221.00
11 276
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