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Atomic Structure of Erbium and Roentgenium


Atomic Structure of Roentgenium and Erbium


Atomic Properties

Atomic Number
68   
99+
111   
7

Electron Configuration
[Xe] 4f12 6s2   
[Rn] 5f14 6d9 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+
111   
7

Number of Neutrons
99   
33
161   
3

Number of Electrons
68   
99+
111   
7

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
Not Available   

Covalent Radius
189.00 pm   
19
Not Available   

Atomic Weight
167.26 amu   
99+
281.00 amu   
6

Atomic Volume
18.40 cm3/mol   
25
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Holmium
  

Next Element
Thulium
  

Valence Electron Potential
49.00 (-eV)   
29
Not Available   

Lattice Constant
355.88 pm   
39
Not Available   

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

Lattice C/A Ratio
1.57   
17
Not Available   

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