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Atomic Structure of Erbium and Radium


Atomic Structure of Radium and Erbium


Atomic Properties

Atomic Number
68   
99+
88   
30

Electron Configuration
[Xe] 4f12 6s2   
[Rn] 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   

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

Atom
  
  

Number of Protons
68   
99+
88   
30

Number of Neutrons
99   
33
138   
16

Number of Electrons
68   
99+
88   
30

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
Not Available   

Covalent Radius
189.00 pm   
19
221.00 pm   
3

Van der Waals Radius
Not Available   
283.00 pm   
4

Atomic Weight
167.26 amu   
99+
226.00 amu   
26

Atomic Volume
18.40 cm3/mol   
25
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

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Holmium
  
Francium
  

Next Element
Thulium
  
Actinium
  

Valence Electron Potential
49.00 (-eV)   
29
20.10 (-eV)   
99+

Lattice Constant
355.88 pm   
39
514.80 pm   
13

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

Lattice C/A Ratio
1.57   
17
Not Available   

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