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Atomic Structure of Cesium and Promethium


Atomic Structure of Promethium and Cesium


Atomic Properties

Atomic Number
55   
99+
61   
99+

Electron Configuration
[Xe] 6s1   
[Xe] 4f5 6s2   

Crystal Structure
Body Centered Cubic (BCC)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Promethium.jpg#100   

Atom
  
  

Number of Protons
55   
99+
61   
99+

Number of Neutrons
78   
99+
84   
40

Number of Electrons
55   
99+
61   
99+

Radius of an Atom
  
  

Atomic Radius
265.00 pm   
1
183.00 pm   
10

Covalent Radius
244.00 pm   
2
199.00 pm   
12

Van der Waals Radius
343.00 pm   
2
236.00 pm   
16

Atomic Weight
132.91 amu   
99+
145.00 amu   
99+

Atomic Volume
71.07 cm3/mol   
1
22.39 cm3/mol   
12

Adjacent Atomic Numbers
  
  

Previous Element
Tin
  
Neodymium
  

Next Element
Barium
  
Samarium
  

Valence Electron Potential
8.62 (-eV)   
99+
44.10 (-eV)   
39

Lattice Constant
614.10 pm   
5
Not Available   

Lattice Angles
π/2, π/2, π/2   
Unknown   

Lattice C/A Ratio
Not Available   
Not Available   

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