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Atomic Structure of Holmium and Calcium


Atomic Structure of Calcium and Holmium


Atomic Properties

Atomic Number
67   
99+
20   
99+

Electron Configuration
[Xe] 4f11 6s2   
[Ar] 4s2   

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

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

Atom
  
  

Number of Protons
67   
99+
20   
99+

Number of Neutrons
98   
34
20   
99+

Number of Electrons
67   
99+
20   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
197.00 pm   
6

Covalent Radius
192.00 pm   
17
176.00 pm   
22

Van der Waals Radius
216.00 pm   
24
231.00 pm   
19

Atomic Weight
164.93 amu   
99+
40.08 amu   
99+

Atomic Volume
18.70 cm3/mol   
24
29.90 cm3/mol   
7

Adjacent Atomic Numbers
  
  

Previous Element
Dysprosium
  
Potassium
  

Next Element
Erbium
  
Scandium
  

Valence Electron Potential
47.90 (-eV)   
31
29.00 (-eV)   
99+

Lattice Constant
357.73 pm   
38
558.84 pm   
9

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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