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Atomic Structure of Actinium and Terbium


Atomic Structure of Terbium and Actinium


Atomic Properties

Atomic Number
89   
29
65   
99+

Electron Configuration
[Rn] 6d1 7s2   
[Xe] 4f9 6s2   

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

Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100   
HCP-Crystal-Structure-of-Terbium.jpg#100   

Atom
  
  

Number of Protons
89   
29
65   
99+

Number of Neutrons
138   
16
94   
36

Number of Electrons
89   
29
65   
99+

Radius of an Atom
  
  

Atomic Radius
195.00 pm   
7
177.00 pm   
17

Covalent Radius
Not Available   
194.00 pm   
16

Van der Waals Radius
Not Available   
221.00 pm   
22

Atomic Weight
227.00 amu   
25
158.93 amu   
99+

Atomic Volume
22.54 cm3/mol   
11
19.20 cm3/mol   
22

Adjacent Atomic Numbers
  
  

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Radium
  
Gadolinium
  

Next Element
Thorium
  
Dysprosium
  

Valence Electron Potential
38.60 (-eV)   
99+
46.80 (-eV)   
33

Lattice Constant
567.00 pm   
8
360.10 pm   
36

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

Lattice C/A Ratio
Not Available   
1.58   
13

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