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Atomic Structure of Actinium and Cesium


Atomic Structure of Cesium and Actinium


Atomic Properties

Atomic Number
89   
29
55   
99+

Electron Configuration
[Rn] 6d1 7s2   
[Xe] 6s1   

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

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

Atom
  
  

Number of Protons
89   
29
55   
99+

Number of Neutrons
138   
16
78   
99+

Number of Electrons
89   
29
55   
99+

Radius of an Atom
  
  

Atomic Radius
195.00 pm   
7
265.00 pm   
1

Covalent Radius
Not Available   
244.00 pm   
2

Van der Waals Radius
Not Available   
343.00 pm   
2

Atomic Weight
227.00 amu   
25
132.91 amu   
99+

Atomic Volume
22.54 cm3/mol   
11
71.07 cm3/mol   
1

Adjacent Atomic Numbers
  
  

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Tin
  

Next Element
Thorium
  
Barium
  

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

Lattice Constant
567.00 pm   
8
614.10 pm   
5

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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