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Atomic Structure of Samarium and Technetium


Atomic Structure of Technetium and Samarium


Atomic

Atomic Number
62  
99+
43  
99+

Electron Configuration
[Xe] 4f6 6s2  
[Kr] 4d5 5s2  

Crystal Structure
Rhombohedral (RHO)  
Hexagonal Close Packed (HCP)  

Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100  
HCP-Crystal-Structure-of-Technetium.jpg#100  

Atom
  
  

Number of Protons
62  
99+
43  
99+

Number of Neutrons
88  
40
55  
99+

Number of Electrons
62  
99+
43  
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm  
16
136.00 pm  
99+

Covalent Radius
198.00 pm  
13
147.00 pm  
39

Van der Waals Radius
229.00 pm  
25
200.00 pm  
35

Atomic Weight
150.36 amu  
99+
98.00 amu  
99+

Atomic Volume
19.95 cm3/mol  
31
8.50 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

Previous Element

Next Element
Europium
  
Ruthenium
  

Valence Electron Potential
44.80 (-eV)  
38
180.00 (-eV)  
3

Lattice Constant
362.10 pm  
37
273.50 pm  
99+

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

Lattice C/A Ratio
1.62  
15
1.60  
21

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