Element Name: Thallium
Atomic No.: 81
State (298 K): solid
Uses: research
Atomic Mass: 204.37 g/mol
Density: 11.85 g/cm
3
B.P.: 1730 K
F.P.: 577 K
Electronic Configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
6
4d
10
4f
14
5s
2
5p
6
5d
10
6s
2
6p
1
Isotopes:
203
Tl 202.9723 amu (29.524%)
205
Tl 204.9745 amu (70.476%)
Electronegativity: 1.62
Radius: 155 pm (covalent)
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