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Atomic Structure of Lanthanum and Curium

Lanthanum
Curium
Atomic Structure of Curium and Lanthanum


Atomic Properties
Atomic Number
57   
99+
96   
22
Electron Configuration
[Xe] 5d2 6s2   
[Rn] 5f7 6d1 7s2   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
DHCP-Crystal-Structure-of-Curium.jpg#100   
Atom
  
  
Number of Protons
57   
99+
96   
22
Number of Neutrons
82   
99+
151   
10
Number of Electrons
57   
99+
96   
22
Radius of an Atom
  
  
Atomic Radius
187.00 pm   
8
174.00 pm   
20
Covalent Radius
207.00 pm   
6
169.00 pm   
26
Van der Waals Radius
240.00 pm   
13
200.00 pm   
28
Atomic Weight
138.91 amu   
99+
247.00 amu   
18
Atomic Volume
20.73 cm3/mol   
16
18.28 cm3/mol   
26
Adjacent Atomic Numbers
  
  
Previous Element
Barium
  
Americium
  
Next Element
Cerium
  
Berkelium
  
Valence Electron Potential
40.71 (-eV)   
99+
44.50 (-eV)   
38
Lattice Constant
377.20 pm   
28
Not Available   
Lattice Angles
π/2, π/2, 2 π/3   
NA   
Lattice C/A Ratio
1.62   
2
Not Available   
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