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Atomic Structure of Americium and Einsteinium


Atomic Structure of Einsteinium and Americium


Atomic

Atomic Number
95  
23
99  
19

Electron Configuration
[Rn] 5f7 7s2  
[Rn] 5f11 7s2  

Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100  
FCC-Crystal-Structure-of-Einsteinium.jpg#100  

Atom
  
  

Number of Protons
95  
23
99  
19

Number of Neutrons
148  
13
153  
10

Number of Electrons
95  
23
99  
19

Radius of an Atom
  
  

Atomic Radius
173.00 pm  
23
186.00 pm  
11

Covalent Radius
180.00 pm  
23
186.00 pm  
21

Van der Waals Radius
244.00 pm  
14
0.00 pm  
99+

Atomic Weight
243.00 amu  
20
252.00 amu  
16

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

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  

Next Element
Curium
  
Fermium
  

Valence Electron Potential
44.00 (-eV)  
99+
0.00 (-eV)  
99+

Lattice Constant
346.81 pm  
99+
582.00 pm  
8

Lattice Angles
π/2, π/2, 2 π/3  
-  

Lattice C/A Ratio
1.58  
34
1.29  
99+

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