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Atomic Structure of Radium and Actinium


Atomic Structure of Actinium and Radium


Atomic Properties

Atomic Number
88   
30
89   
29

Electron Configuration
[Rn] 7s2   
[Rn] 6d1 7s2   

Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   

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

Atom
  
  

Number of Protons
88   
30
89   
29

Number of Neutrons
138   
16
138   
16

Number of Electrons
88   
30
89   
29

Radius of an Atom
  
  

Atomic Radius
Not Available   
195.00 pm   
7

Covalent Radius
221.00 pm   
3
Not Available   

Van der Waals Radius
283.00 pm   
4
Not Available   

Atomic Weight
226.00 amu   
26
227.00 amu   
25

Atomic Volume
45.20 cm3/mol   
4
22.54 cm3/mol   
11

Adjacent Atomic Numbers
  
  

Previous Element
Francium
  
Radium
  

Next Element
Actinium
  
Thorium
  

Valence Electron Potential
20.10 (-eV)   
99+
38.60 (-eV)   
99+

Lattice Constant
514.80 pm   
13
567.00 pm   
8

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

Lattice C/A Ratio
Not Available   
Not Available   

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