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Atomic Structure of Protactinium and Thallium


Atomic Structure of Thallium and Protactinium


Atomic Properties

Atomic Number
91   
27
81   
35

Electron Configuration
[Rn] 5f2 6d1 7s2   
[Xe] 4f14 5d10 6s2 6p1   

Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
91   
27
81   
35

Number of Neutrons
122   
21
123   
20

Number of Electrons
91   
27
81   
35

Radius of an Atom
  
  

Atomic Radius
163.00 pm   
25
170.00 pm   
22

Covalent Radius
200.00 pm   
11
145.00 pm   
39

Van der Waals Radius
243.00 pm   
11
196.00 pm   
30

Atomic Weight
231.04 amu   
24
204.38 amu   
31

Atomic Volume
15.00 cm3/mol   
34
17.20 cm3/mol   
31

Adjacent Atomic Numbers
  
  

Previous Element
Thorium
  
Mercury
  

Next Element
Uranium
  
Lead
  

Valence Electron Potential
92.00 (-eV)   
11
9.60 (-eV)   
99+

Lattice Constant
392.50 pm   
23
345.66 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.60   
6

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