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Atomic Structure of Potassium and Promethium

Potassium
Promethium
Atomic Structure of Promethium and Potassium


Atomic Properties
Atomic Number
19   
99+
61   
99+
Electron Configuration
[Ar] 4s1   
[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
19   
99+
61   
99+
Number of Neutrons
20   
99+
84   
40
Number of Electrons
19   
99+
61   
99+
Radius of an Atom
  
  
Atomic Radius
227.00 pm   
3
183.00 pm   
10
Covalent Radius
203.00 pm   
9
199.00 pm   
12
Van der Waals Radius
275.00 pm   
5
236.00 pm   
16
Atomic Weight
39.10 amu   
99+
145.00 amu   
99+
Atomic Volume
45.46 cm3/mol   
3
22.39 cm3/mol   
12
Adjacent Atomic Numbers
  
  
Previous Element
Aluminium
  
Neodymium
  
Next Element
Calcium
  
Samarium
  
Valence Electron Potential
10.40 (-eV)   
99+
44.10 (-eV)   
39
Lattice Constant
532.80 pm   
12
Not Available   
Lattice Angles
π/2, π/2, π/2   
Unknown   
Lattice C/A Ratio
Not Available   
Not Available   
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