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Atomic Structure of Cesium and Thulium


Atomic Structure of Thulium and Cesium


Atomic

Atomic Number
55  
99+
69  
99+

Electron Configuration
[Xe] 6s1  
[Xe] 4f13 6s2  

Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  

Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
HCP-Crystal-Structure-of-Thulium.jpg#100  

Atom
  
  

Number of Protons
55  
99+
69  
99+

Number of Neutrons
78  
99+
100  
33

Number of Electrons
55  
99+
69  
99+

Radius of an Atom
  
  

Atomic Radius
265.00 pm  
2
176.00 pm  
20

Covalent Radius
244.00 pm  
2
160.00 pm  
32

Van der Waals Radius
343.00 pm  
2
227.00 pm  
26

Atomic Weight
132.91 amu  
99+
168.93 amu  
99+

Atomic Volume
71.07 cm3/mol  
1
18.10 cm3/mol  
40

Adjacent Atomic Numbers
  
  

Previous Element
Tin
  
Erbium
  

Next Element
Barium
  
Ytterbium
  

Valence Electron Potential
8.62 (-eV)  
99+
49.70 (-eV)  
29

Lattice Constant
614.10 pm  
5
353.75 pm  
99+

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

Lattice C/A Ratio
1.87  
3
1.57  
40

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