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Atomic Structure of Promethium and Einsteinium

Promethium
Einsteinium
Atomic Structure of Einsteinium and Promethium


Atomic
Atomic Number
61  
99+
99  
19
Electron Configuration
[Xe] 4f5 6s2  
[Rn] 5f11 7s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100  
FCC-Crystal-Structure-of-Einsteinium.jpg#100  
Atom
  
  
Number of Protons
61  
99+
99  
19
Number of Neutrons
84  
99+
153  
10
Number of Electrons
61  
99+
99  
19
Radius of an Atom
  
  
Atomic Radius
183.00 pm  
12
186.00 pm  
11
Covalent Radius
199.00 pm  
12
186.00 pm  
21
Van der Waals Radius
236.00 pm  
20
0.00 pm  
99+
Atomic Weight
145.00 amu  
99+
252.00 amu  
16
Atomic Volume
22.39 cm3/mol  
21
17.04 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Neodymium
  
Californium
  
Next Element
Samarium
  
Fermium
  
Valence Electron Potential
44.10 (-eV)  
40
0.00 (-eV)  
99+
Lattice Constant
-  
582.00 pm  
8
Lattice Angles
-  
-  
Lattice C/A Ratio
1.63  
14
1.29  
99+
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