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Atomic Structure of Polonium and Lanthanum


Atomic Structure of Lanthanum and Polonium


Atomic Properties

Atomic Number
84   
32
57   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2 6p4   
[Xe] 5d2 6s2   

Crystal Structure
Monoclinic (MON)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   

Atom
  
  

Number of Protons
84   
32
57   
99+

Number of Neutrons
125   
19
82   
99+

Number of Electrons
84   
32
57   
99+

Radius of an Atom
  
  

Atomic Radius
168.00 pm   
23
187.00 pm   
8

Covalent Radius
140.00 pm   
99+
207.00 pm   
6

Van der Waals Radius
197.00 pm   
29
240.00 pm   
13

Atomic Weight
209.00 amu   
28
138.91 amu   
99+

Atomic Volume
22.23 cm3/mol   
13
20.73 cm3/mol   
16

Adjacent Atomic Numbers
  
  

Previous Element
Bismuth
  
Barium
  

Next Element
Francium
  
Cerium
  

Valence Electron Potential
Not Available   
40.71 (-eV)   
99+

Lattice Constant
335.90 pm   
99+
377.20 pm   
28

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

Lattice C/A Ratio
Not Available   
1.62   
2

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