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Atomic Structure of Actinium and Tantalum


Atomic Structure of Tantalum and Actinium


Atomic Properties

Atomic Number
89   
29
73   
99+

Electron Configuration
[Rn] 6d1 7s2   
[Xe] 4f14 5d3 6s2   

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
73   
99+

Number of Neutrons
138   
16
108   
28

Number of Electrons
89   
29
73   
99+

Radius of an Atom
  
  

Atomic Radius
195.00 pm   
7
146.00 pm   
35

Covalent Radius
Not Available   
170.00 pm   
25

Van der Waals Radius
Not Available   
200.00 pm   
28

Atomic Weight
227.00 amu   
25
180.95 amu   
38

Atomic Volume
22.54 cm3/mol   
11
10.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Radium
  
Hafnium
  

Next Element
Thorium
  
Tungsten
  

Valence Electron Potential
38.60 (-eV)   
99+
110.00 (-eV)   
7

Lattice Constant
567.00 pm   
8
330.13 pm   
99+

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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