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Atomic Structure of Erbium and Neptunium


Atomic Structure of Neptunium and Erbium


Atomic Properties

Atomic Number
68   
99+
93   
25

Electron Configuration
[Xe] 4f12 6s2   
[Rn] 5f4 6d1 7s2   

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

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

Atom
  
  

Number of Protons
68   
99+
93   
25

Number of Neutrons
99   
33
144   
14

Number of Electrons
68   
99+
93   
25

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
155.00 pm   
30

Covalent Radius
189.00 pm   
19
190.00 pm   
18

Van der Waals Radius
Not Available   
221.00 pm   
22

Atomic Weight
167.26 amu   
99+
237.00 amu   
22

Atomic Volume
18.40 cm3/mol   
25
11.62 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Thulium
  
Plutonium
  

Valence Electron Potential
49.00 (-eV)   
29
96.00 (-eV)   
9

Lattice Constant
355.88 pm   
39
666.30 pm   
3

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

Lattice C/A Ratio
1.57   
17
Not Available   

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