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Atomic Structure of Einsteinium and Neptunium


Atomic Structure of Neptunium and Einsteinium


Atomic

Atomic Number
99  
19
93  
25

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

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

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

Atom
  
  

Number of Protons
99  
19
93  
25

Number of Neutrons
153  
10
144  
15

Number of Electrons
99  
19
93  
25

Radius of an Atom
  
  

Atomic Radius
186.00 pm  
11
155.00 pm  
32

Covalent Radius
186.00 pm  
21
190.00 pm  
18

Van der Waals Radius
0.00 pm  
99+
221.00 pm  
27

Atomic Weight
252.00 amu  
16
237.00 amu  
22

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

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  

Next Element
Fermium
  
Plutonium
  

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

Lattice Constant
582.00 pm  
8
666.30 pm  
3

Lattice Angles
-  
π/2, π/2, π/2  

Lattice C/A Ratio
1.29  
99+
1.43  
99+

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