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Atomic Structure of Lanthanum and Strontium


Atomic Structure of Strontium and Lanthanum


Atomic Properties

Atomic Number
57   
99+
38   
99+

Electron Configuration
[Xe] 5d2 6s2   
[Kr] 5s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
FCC-Crystal-Structure-of-Strontium.jpg#100   

Atom
  
  

Number of Protons
57   
99+
38   
99+

Number of Neutrons
82   
99+
50   
99+

Number of Electrons
57   
99+
38   
99+

Radius of an Atom
  
  

Atomic Radius
187.00 pm   
8
215.00 pm   
5

Covalent Radius
207.00 pm   
6
195.00 pm   
15

Van der Waals Radius
240.00 pm   
13
249.00 pm   
7

Atomic Weight
138.91 amu   
99+
87.62 amu   
99+

Atomic Volume
20.73 cm3/mol   
16
33.70 cm3/mol   
6

Adjacent Atomic Numbers
  
  

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Barium
  
Rubidium
  

Next Element
Cerium
  
Yttrium
  

Valence Electron Potential
40.71 (-eV)   
99+
25.70 (-eV)   
99+

Lattice Constant
377.20 pm   
28
608.49 pm   
6

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

Lattice C/A Ratio
1.62   
2
Not Available   

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