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Atomic Structure of Protactinium and Einsteinium

Protactinium
Einsteinium
Atomic Structure of Einsteinium and Protactinium


Atomic
Atomic Number
91  
27
99  
19
Electron Configuration
[Rn] 5f2 6d1 7s2  
[Rn] 5f11 7s2  
Crystal Structure
Tetragonal (TETR)  
Face Centered Cubic (FCC)  
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100  
FCC-Crystal-Structure-of-Einsteinium.jpg#100  
Atom
  
  
Number of Protons
91  
27
99  
19
Number of Neutrons
122  
22
153  
10
Number of Electrons
91  
27
99  
19
Radius of an Atom
  
  
Atomic Radius
163.00 pm  
27
186.00 pm  
11
Covalent Radius
200.00 pm  
11
186.00 pm  
21
Van der Waals Radius
243.00 pm  
15
0.00 pm  
99+
Atomic Weight
231.04 amu  
24
252.00 amu  
16
Atomic Volume
15.00 cm3/mol  
99+
17.04 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Californium
  
Next Element
Uranium
  
Fermium
  
Valence Electron Potential
92.00 (-eV)  
11
0.00 (-eV)  
99+
Lattice Constant
392.50 pm  
26
582.00 pm  
8
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.58  
36
1.29  
99+
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