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Atomic Structure of Americium and Yttrium

Americium
Yttrium
Atomic Structure of Yttrium and Americium


Atomic Properties
Atomic Number
95   
23
39   
99+
Electron Configuration
[Rn] 5f7 7s2   
[Kr] 4d1 5s2   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
HCP-Crystal-Structure-of-Yttrium.jpg#100   
Atom
  
  
Number of Protons
95   
23
39   
99+
Number of Neutrons
148   
12
50   
99+
Number of Electrons
95   
23
39   
99+
Radius of an Atom
  
  
Atomic Radius
173.00 pm   
21
180.00 pm   
14
Covalent Radius
180.00 pm   
21
190.00 pm   
18
Van der Waals Radius
244.00 pm   
10
200.00 pm   
28
Atomic Weight
243.00 amu   
20
88.91 amu   
99+
Atomic Volume
17.86 cm3/mol   
29
19.80 cm3/mol   
21
Adjacent Atomic Numbers
  
  
Previous Element
Plutonium
  
Strontium
  
Next Element
Curium
  
Zirconium
  
Valence Electron Potential
44.00 (-eV)   
40
48.00 (-eV)   
30
Lattice Constant
346.81 pm   
99+
364.74 pm   
31
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.57   
16
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