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Atomic Structure of Americium and Europium


Atomic Structure of Europium and Americium


Atomic Properties

Atomic Number
95   
23
63   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Xe] 4f7 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
95   
23
63   
99+

Number of Neutrons
148   
12
89   
38

Number of Electrons
95   
23
63   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
180.00 pm   
14

Covalent Radius
180.00 pm   
21
198.00 pm   
13

Van der Waals Radius
244.00 pm   
10
233.00 pm   
18

Atomic Weight
243.00 amu   
20
151.96 amu   
99+

Atomic Volume
17.86 cm3/mol   
29
28.90 cm3/mol   
8

Adjacent Atomic Numbers
  
  

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Samarium
  

Next Element
Curium
  
Gadolinium
  

Valence Electron Potential
44.00 (-eV)   
40
45.60 (-eV)   
35

Lattice Constant
346.81 pm   
99+
458.10 pm   
17

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

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