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Atomic Structure of Promethium and Rhenium


Atomic Structure of Rhenium and Promethium


Atomic Properties

Atomic Number
61   
99+
75   
99+

Electron Configuration
[Xe] 4f5 6s2   
[Xe] 4f14 5d5 6s2   

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

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

Atom
  
  

Number of Protons
61   
99+
75   
40

Number of Neutrons
84   
40
111   
26

Number of Electrons
61   
99+
75   
40

Radius of an Atom
  
  

Atomic Radius
183.00 pm   
10
137.00 pm   
40

Covalent Radius
199.00 pm   
12
151.00 pm   
34

Van der Waals Radius
236.00 pm   
16
200.00 pm   
28

Atomic Weight
145.00 amu   
99+
186.21 amu   
36

Atomic Volume
22.39 cm3/mol   
12
8.85 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Neodymium
  
Tungsten
  

Next Element
Samarium
  
Osmium
  

Valence Electron Potential
44.10 (-eV)   
39
180.00 (-eV)   
3

Lattice Constant
Not Available   
276.10 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.62   
3

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