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Atomic Structure of Thulium and Protactinium


Atomic Structure of Protactinium and Thulium


Atomic

Atomic Number
69  
99+
91  
27

Electron Configuration
[Xe] 4f13 6s2  
[Rn] 5f2 6d1 7s2  

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

Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100  
TETR-Crystal-Structure-of-Protactinium.jpg#100  

Atom
  
  

Number of Protons
69  
99+
91  
27

Number of Neutrons
100  
33
122  
22

Number of Electrons
69  
99+
91  
27

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
163.00 pm  
27

Covalent Radius
160.00 pm  
32
200.00 pm  
11

Van der Waals Radius
227.00 pm  
26
243.00 pm  
15

Atomic Weight
168.93 amu  
99+
231.04 amu  
24

Atomic Volume
18.10 cm3/mol  
40
15.00 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  
Thorium
  

Next Element
Ytterbium
  
Uranium
  

Valence Electron Potential
49.70 (-eV)  
29
92.00 (-eV)  
11

Lattice Constant
353.75 pm  
99+
392.50 pm  
26

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

Lattice C/A Ratio
1.57  
40
1.58  
36

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