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Atomic Structure of Potassium and Erbium

Potassium
Erbium
Atomic Structure of Erbium and Potassium


Atomic Properties
Atomic Number
19   
99+
68   
99+
Electron Configuration
[Ar] 4s1   
[Xe] 4f12 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Erbium.jpg#100   
Atom
  
  
Number of Protons
19   
99+
68   
99+
Number of Neutrons
20   
99+
99   
33
Number of Electrons
19   
99+
68   
99+
Radius of an Atom
  
  
Atomic Radius
227.00 pm   
3
176.00 pm   
18
Covalent Radius
203.00 pm   
9
189.00 pm   
19
Van der Waals Radius
275.00 pm   
5
Not Available   
Atomic Weight
39.10 amu   
99+
167.26 amu   
99+
Atomic Volume
45.46 cm3/mol   
3
18.40 cm3/mol   
25
Adjacent Atomic Numbers
  
  
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Aluminium
  
Holmium
  
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Calcium
  
Thulium
  
Valence Electron Potential
10.40 (-eV)   
99+
49.00 (-eV)   
29
Lattice Constant
532.80 pm   
12
355.88 pm   
39
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.57   
17
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