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Atomic Structure of Promethium and Thallium

Promethium
Thallium
Atomic Structure of Thallium and Promethium


Atomic Properties
Atomic Number
61   
99+
81   
35
Electron Configuration
[Xe] 4f5 6s2   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
61   
99+
81   
35
Number of Neutrons
84   
40
123   
20
Number of Electrons
61   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
183.00 pm   
10
170.00 pm   
22
Covalent Radius
199.00 pm   
12
145.00 pm   
39
Van der Waals Radius
236.00 pm   
16
196.00 pm   
30
Atomic Weight
145.00 amu   
99+
204.38 amu   
31
Atomic Volume
22.39 cm3/mol   
12
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
Previous Element
Neodymium
  
Mercury
  
Next Element
Samarium
  
Lead
  
Valence Electron Potential
44.10 (-eV)   
39
9.60 (-eV)   
99+
Lattice Constant
Not Available   
345.66 pm   
99+
Lattice Angles
Unknown   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.60   
6
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