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Atomic Structure of Yttrium and Lanthanum

Yttrium
Lanthanum
Atomic Structure of Lanthanum and Yttrium


Atomic Properties
Atomic Number
39   
99+
57   
99+
Electron Configuration
[Kr] 4d1 5s2   
[Xe] 5d2 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Yttrium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
Atom
  
  
Number of Protons
39   
99+
57   
99+
Number of Neutrons
50   
99+
82   
99+
Number of Electrons
39   
99+
57   
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
187.00 pm   
8
Covalent Radius
190.00 pm   
18
207.00 pm   
6
Van der Waals Radius
200.00 pm   
28
240.00 pm   
13
Atomic Weight
88.91 amu   
99+
138.91 amu   
99+
Atomic Volume
19.80 cm3/mol   
21
20.73 cm3/mol   
16
Adjacent Atomic Numbers
  
  
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Strontium
  
Barium
  
Next Element
Zirconium
  
Cerium
  
Valence Electron Potential
48.00 (-eV)   
30
40.71 (-eV)   
99+
Lattice Constant
364.74 pm   
31
377.20 pm   
28
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.57   
16
1.62   
2
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