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Atomic Structure of Erbium and Scandium


Atomic Structure of Scandium and Erbium


Atomic Properties

Atomic Number
68   
99+
21   
99+

Electron Configuration
[Xe] 4f12 6s2   
[Ar] 3d1 4s2   

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

Crystal Lattice
HCP-Crystal-Structure-of-Erbium.jpg#100   
HCP-Crystal-Structure-of-Scandium.jpg#100   

Atom
  
  

Number of Protons
68   
99+
21   
99+

Number of Neutrons
99   
33
24   
99+

Number of Electrons
68   
99+
21   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
162.00 pm   
26

Covalent Radius
189.00 pm   
19
170.00 pm   
25

Van der Waals Radius
Not Available   
211.00 pm   
25

Atomic Weight
167.26 amu   
99+
44.96 amu   
99+

Atomic Volume
18.40 cm3/mol   
25
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

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Thulium
  
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Valence Electron Potential
49.00 (-eV)   
29
58.00 (-eV)   
24

Lattice Constant
355.88 pm   
39
330.90 pm   
99+

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

Lattice C/A Ratio
1.57   
17
1.59   
7

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