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Promethium
Promethium

Polonium
Polonium



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Promethium
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Polonium

Promethium and Polonium Periodic Table

1 Periodic Table
1.1 Symbol
Pm
Po
1.2 Group Number
NA16
Gadolinium In Periodic Table
0 17
1.3 Period Number
66
Lithium In Periodic Table
2 7
1.4 Block
f block
p block
1.5 Element Family
Lanthanide
Post-​Transition
1.6 CAS Number
74401227440086
Aluminium In Periodic Table
7429905 54386242
1.7 Space Group Name
Not Available
Pm-3m
1.8 Space Group Number
NA221.00
Plutonium In Periodic Table
11 229