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Atomic Structure of Promethium and Barium


Atomic Structure of Barium and Promethium


Atomic Properties

Atomic Number
61   
99+
56   
99+

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

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

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

Atom
  
  

Number of Protons
61   
99+
56   
99+

Number of Neutrons
84   
40
81   
99+

Number of Electrons
61   
99+
56   
99+

Radius of an Atom
  
  

Atomic Radius
183.00 pm   
10
222.00 pm   
4

Covalent Radius
199.00 pm   
12
215.00 pm   
5

Van der Waals Radius
236.00 pm   
16
268.00 pm   
6

Atomic Weight
145.00 amu   
99+
137.33 amu   
99+

Atomic Volume
22.39 cm3/mol   
12
39.24 cm3/mol   
5

Adjacent Atomic Numbers
  
  

Previous Element
Neodymium
  
Cesium
  

Next Element
Samarium
  
Lanthanum
  

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

Lattice Constant
Not Available   
502.80 pm   
15

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

Lattice C/A Ratio
Not Available   
Not Available   

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