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Atomic Structure of Neptunium and Einsteinium


Atomic Structure of Einsteinium and Neptunium


Atomic

Atomic Number
93  
25
99  
19

Electron Configuration
[Rn] 5f4 6d1 7s2  
[Rn] 5f11 7s2  

Crystal Structure
Orthorhombic (ORTH)  
Face Centered Cubic (FCC)  

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100  
FCC-Crystal-Structure-of-Einsteinium.jpg#100  

Atom
  
  

Number of Protons
93  
25
99  
19

Number of Neutrons
144  
15
153  
10

Number of Electrons
93  
25
99  
19

Radius of an Atom
  
  

Atomic Radius
155.00 pm  
32
186.00 pm  
11

Covalent Radius
190.00 pm  
18
186.00 pm  
21

Van der Waals Radius
221.00 pm  
27
0.00 pm  
99+

Atomic Weight
237.00 amu  
22
252.00 amu  
16

Atomic Volume
11.62 cm3/mol  
99+
17.04 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  

Next Element
Plutonium
  
Fermium
  

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

Lattice Constant
666.30 pm  
3
582.00 pm  
8

Lattice Angles
π/2, π/2, π/2  
-  

Lattice C/A Ratio
1.43  
99+
1.29  
99+

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