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Atomic Structure of Cerium and Tantalum


Atomic Structure of Tantalum and Cerium


Atomic Properties

Atomic Number
58   
99+
73   
99+

Electron Configuration
[Xe] 4f1 5d1 6s2   
[Xe] 4f14 5d3 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
DHCP-Crystal-Structure-of-Cerium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
58   
99+
73   
99+

Number of Neutrons
82   
99+
108   
28

Number of Electrons
58   
99+
73   
99+

Radius of an Atom
  
  

Atomic Radius
181.80 pm   
12
146.00 pm   
35

Covalent Radius
204.00 pm   
8
170.00 pm   
25

Van der Waals Radius
235.00 pm   
17
200.00 pm   
28

Atomic Weight
140.12 amu   
99+
180.95 amu   
38

Atomic Volume
20.67 cm3/mol   
17
10.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Lanthanum
  
Hafnium
  

Next Element
Tungsten
  

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

Lattice Constant
362.00 pm   
34
330.13 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

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