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Periodic Table
Picture of  Thallium
 
 

 Atomic No. Order:e
[Picture]

 Alphabetic Order:
 

Thallium  
Ground State Electron Configuration of  Thallium
Symbol: Tl
Atomic Number: 81
Atomicmass: 204.383 g.mol -1
Electronegative (According to Pauling): 1.8
Density: 11.71 g.cm-3 at 20°C
Melting Point: 1800 °C
Boiling Point: 4200 °C
Venderwaals Radious: 0.182 nm
Ionic Radious: 0.099 nm
Isotopes: 11
Electronic Shell: [ Xe ] 4f14 5d10 6s2 6p1
Energy Of First Ionisation: 589.1 kJ.mol -1  

81

No of Protons
Standard Potential:

Electorn in Full Shell
Discoverd By: Discovered by Sir William Crookes in 1861

Electorn in Partial Shell
   
 
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