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Atomic Structure of Einsteinium and Francium

Einsteinium
Francium
Atomic Structure of Francium and Einsteinium


Atomic
Atomic Number
99  
19
87  
31
Electron Configuration
[Rn] 5f11 7s2  
[Rn] 7s1  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Einsteinium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
99  
19
87  
31
Number of Neutrons
153  
10
136  
18
Number of Electrons
99  
19
87  
31
Radius of an Atom
  
  
Atomic Radius
186.00 pm  
11
348.00 pm  
1
Covalent Radius
186.00 pm  
21
260.00 pm  
1
Van der Waals Radius
0.00 pm  
99+
348.00 pm  
1
Atomic Weight
252.00 amu  
16
223.00 amu  
27
Atomic Volume
17.04 cm3/mol  
99+
71.00 cm3/mol  
2
Adjacent Atomic Numbers
  
  
Previous Element
Californium
  
Polonium
  
Next Element
Fermium
  
Radium
  
Valence Electron Potential
0.00 (-eV)  
99+
8.00 (-eV)  
99+
Lattice Constant
582.00 pm  
8
440.00 pm  
21
Lattice Angles
-  
-  
Lattice C/A Ratio
1.29  
99+
1.56  
99+
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