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Atomic Structure of Thulium and Cesium


Atomic Structure of Cesium and Thulium


Atomic

Atomic Number
69  
99+
55  
99+

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

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

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

Atom
  
  

Number of Protons
69  
99+
55  
99+

Number of Neutrons
100  
33
78  
99+

Number of Electrons
69  
99+
55  
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
265.00 pm  
2

Covalent Radius
160.00 pm  
32
244.00 pm  
2

Van der Waals Radius
227.00 pm  
26
343.00 pm  
2

Atomic Weight
168.93 amu  
99+
132.91 amu  
99+

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

Adjacent Atomic Numbers
  
  

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Erbium
  
Tin
  

Next Element
Ytterbium
  
Barium
  

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

Lattice Constant
353.75 pm  
99+
614.10 pm  
5

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

Lattice C/A Ratio
1.57  
40
1.87  
3

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