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Atomic Structure of Neptunium and Thulium


Atomic Structure of Thulium and Neptunium


Atomic Properties

Atomic Number
93   
25
69   
99+

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Xe] 4f13 6s2   

Crystal Structure
Orthorhombic (ORTH)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   

Atom
  
  

Number of Protons
93   
25
69   
99+

Number of Neutrons
144   
14
100   
32

Number of Electrons
93   
25
69   
99+

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
176.00 pm   
18

Covalent Radius
190.00 pm   
18
160.00 pm   
30

Van der Waals Radius
221.00 pm   
22
Not Available   

Atomic Weight
237.00 amu   
22
168.93 amu   
99+

Atomic Volume
11.62 cm3/mol   
99+
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

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Erbium
  

Next Element
Plutonium
  
Ytterbium
  

Valence Electron Potential
96.00 (-eV)   
9
49.70 (-eV)   
28

Lattice Constant
666.30 pm   
3
353.75 pm   
40

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

Lattice C/A Ratio
Not Available   
1.57   
17

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