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Atomic Structure of Terbium and Protactinium

Terbium
Protactinium
Atomic Structure of Protactinium and Terbium


Atomic Properties
Atomic Number
65   
99+
91   
27
Electron Configuration
[Xe] 4f9 6s2   
[Rn] 5f2 6d1 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Tetragonal (TETR)   
Crystal Lattice
HCP-Crystal-Structure-of-Terbium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Atom
  
  
Number of Protons
65   
99+
91   
27
Number of Neutrons
94   
36
122   
21
Number of Electrons
65   
99+
91   
27
Radius of an Atom
  
  
Atomic Radius
177.00 pm   
17
163.00 pm   
25
Covalent Radius
194.00 pm   
16
200.00 pm   
11
Van der Waals Radius
221.00 pm   
22
243.00 pm   
11
Atomic Weight
158.93 amu   
99+
231.04 amu   
24
Atomic Volume
19.20 cm3/mol   
22
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
Previous Element
Gadolinium
  
Thorium
  
Next Element
Dysprosium
  
Uranium
  
Valence Electron Potential
46.80 (-eV)   
33
92.00 (-eV)   
11
Lattice Constant
360.10 pm   
36
392.50 pm   
23
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.58   
13
Not Available   
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