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Atomic Structure of Strontium and Technetium

Strontium
Technetium
Atomic Structure of Technetium and Strontium


Atomic Properties
Atomic Number
38   
99+
43   
99+
Electron Configuration
[Kr] 5s2   
[Kr] 4d5 5s2   
Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
FCC-Crystal-Structure-of-Strontium.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   
Atom
  
  
Number of Protons
38   
99+
43   
99+
Number of Neutrons
50   
99+
55   
99+
Number of Electrons
38   
99+
43   
99+
Radius of an Atom
  
  
Atomic Radius
215.00 pm   
5
136.00 pm   
99+
Covalent Radius
195.00 pm   
15
147.00 pm   
37
Van der Waals Radius
249.00 pm   
7
200.00 pm   
28
Atomic Weight
87.62 amu   
99+
98.00 amu   
99+
Atomic Volume
33.70 cm3/mol   
6
8.50 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Rubidium
  
Molybdenum
  
Next Element
Yttrium
  
Ruthenium
  
Valence Electron Potential
25.70 (-eV)   
99+
180.00 (-eV)   
3
Lattice Constant
608.49 pm   
6
273.50 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.60   
5
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