PERIODIC TABLE
Thallium
Atomic No. 81
Tl
Thallium
About Thallium
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Properties
- Atomic Number
- 81
- Atomic Symbol
- Tl
- Atomic Mass
- 204.3833
- CAS No.
- 7440-28-0
- Density
- 11.85 g/cm³
- Series
- post-transition metal
- Melting Point
- 304°C
- Boiling Point
- 1,473°C
- Thermal Conductivity
- 0.46 W/cm °C
- Heat of Fusion
- 4.2 kJ/mol
- Heat of Vaporization
- 165 kJ/mol
- Electronegativity
- 1.62 pauling
- Crystal Structure
- Hexagonal
- Electrical Conductivity
- 6.7×106 S/m
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