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Atomic Structure of Lutetium and Actinium


Atomic Structure of Actinium and Lutetium


Atomic Properties

Atomic Number
71   
99+
89   
29

Electron Configuration
[Xe] 6s2 4f14 5d1   
[Rn] 6d1 7s2   

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

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Actinium.jpg#100   

Atom
  
  

Number of Protons
71   
99+
89   
29

Number of Neutrons
104   
30
138   
16

Number of Electrons
71   
99+
89   
29

Radius of an Atom
  
  

Atomic Radius
174.00 pm   
20
195.00 pm   
7

Covalent Radius
187.00 pm   
20
Not Available   

Van der Waals Radius
221.00 pm   
22
Not Available   

Atomic Weight
174.97 amu   
40
227.00 amu   
25

Atomic Volume
17.78 cm3/mol   
30
22.54 cm3/mol   
11

Adjacent Atomic Numbers
  
  

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Hafnium
  
Thorium
  

Valence Electron Potential
50.90 (-eV)   
26
38.60 (-eV)   
99+

Lattice Constant
350.31 pm   
99+
567.00 pm   
8

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

Lattice C/A Ratio
1.59   
10
Not Available   

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