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Atomic Structure of Promethium and Berkelium


Atomic Structure of Berkelium and Promethium


Atomic Properties

Atomic Number
61   
99+
97   
21

Electron Configuration
[Xe] 4f5 6s2   
[Rn] 5f9 7s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Double Hexagonal Close Packed (DHCP)   

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

Atom
  
  

Number of Protons
61   
99+
97   
21

Number of Neutrons
84   
40
150   
11

Number of Electrons
61   
99+
97   
21

Radius of an Atom
  
  

Atomic Radius
183.00 pm   
10
170.00 pm   
22

Covalent Radius
199.00 pm   
12
Not Available   

Van der Waals Radius
236.00 pm   
16
Not Available   

Atomic Weight
145.00 amu   
99+
247.00 amu   
18

Atomic Volume
22.39 cm3/mol   
12
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Neodymium
  
Curium
  

Next Element
Samarium
  

Valence Electron Potential
44.10 (-eV)   
39
45.50 (-eV)   
36

Lattice Constant
Not Available   
341.60 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

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