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Atomic Structure of Calcium and Erbium


Atomic Structure of Erbium and Calcium


Atomic Properties

Atomic Number
20   
99+
68   
99+

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

Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
FCC-Crystal-Structure-of-Calcium.jpg#100   
HCP-Crystal-Structure-of-Erbium.jpg#100   

Atom
  
  

Number of Protons
20   
99+
68   
99+

Number of Neutrons
20   
99+
99   
33

Number of Electrons
20   
99+
68   
99+

Radius of an Atom
  
  

Atomic Radius
197.00 pm   
6
176.00 pm   
18

Covalent Radius
176.00 pm   
22
189.00 pm   
19

Van der Waals Radius
231.00 pm   
19
Not Available   

Atomic Weight
40.08 amu   
99+
167.26 amu   
99+

Atomic Volume
29.90 cm3/mol   
7
18.40 cm3/mol   
25

Adjacent Atomic Numbers
  
  

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

Lattice Constant
558.84 pm   
9
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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