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Atomic Structure of Berkelium and Promethium


Atomic Structure of Promethium and Berkelium


Atomic Properties

Atomic Number
97   
21
61   
99+

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

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

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

Atom
  
  

Number of Protons
97   
21
61   
99+

Number of Neutrons
150   
11
84   
40

Number of Electrons
97   
21
61   
99+

Radius of an Atom
  
  

Atomic Radius
170.00 pm   
22
183.00 pm   
10

Covalent Radius
Not Available   
199.00 pm   
12

Van der Waals Radius
Not Available   
236.00 pm   
16

Atomic Weight
247.00 amu   
18
145.00 amu   
99+

Atomic Volume
Not Available   
22.39 cm3/mol   
12

Adjacent Atomic Numbers
  
  

Previous Element
Curium
  
Neodymium
  

Next Element
Samarium
  

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

Lattice Constant
341.60 pm   
99+
Not Available   

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

Lattice C/A Ratio
Not Available   
Not Available   

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