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Atomic Structure of Neptunium and Thallium


Atomic Structure of Thallium and Neptunium


Atomic Properties

Atomic Number
93   
25
81   
35

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Xe] 4f14 5d10 6s2 6p1   

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

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
93   
25
81   
35

Number of Neutrons
144   
14
123   
20

Number of Electrons
93   
25
81   
35

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
170.00 pm   
22

Covalent Radius
190.00 pm   
18
145.00 pm   
39

Van der Waals Radius
221.00 pm   
22
196.00 pm   
30

Atomic Weight
237.00 amu   
22
204.38 amu   
31

Atomic Volume
11.62 cm3/mol   
99+
17.20 cm3/mol   
31

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  
Mercury
  

Next Element
Plutonium
  
Lead
  

Valence Electron Potential
96.00 (-eV)   
9
9.60 (-eV)   
99+

Lattice Constant
666.30 pm   
3
345.66 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   
6

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