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Thallium
Thallium

Cesium
Cesium



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Thallium
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Cesium

Thallium and Cesium Periodic Table

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Periodic Table

Symbol

Tl
Cs

Group Number

131
0 17
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Period Number

66
2 7
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Block

p block
s block

Element Family

Post-​Transition
Alkali

CAS Number

74402807440462
7429905 54386242
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Space Group Name

P63/mmc
Im_ 3m

Space Group Number

194.00229.00
11 276
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