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Atomic Structure of Lanthanum and Osmium


Atomic Structure of Osmium and Lanthanum


Atomic Properties

Atomic Number
57   
99+
76   
40

Electron Configuration
[Xe] 5d2 6s2   
[Xe] 4f14 5d6 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

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

Atom
  
  

Number of Protons
57   
99+
76   
39

Number of Neutrons
82   
99+
114   
25

Number of Electrons
57   
99+
76   
39

Radius of an Atom
  
  

Atomic Radius
187.00 pm   
8
133.80 pm   
99+

Covalent Radius
207.00 pm   
6
Not Available   

Van der Waals Radius
240.00 pm   
13
216.00 pm   
24

Atomic Weight
138.91 amu   
99+
190.23 amu   
35

Atomic Volume
20.73 cm3/mol   
16
8.49 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Barium
  
Rhenium
  

Next Element
Cerium
  
Iridium
  

Valence Electron Potential
40.71 (-eV)   
99+
91.40 (-eV)   
12

Lattice Constant
377.20 pm   
28
273.44 pm   
99+

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

Lattice C/A Ratio
1.62   
2
1.58   
14

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