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Atomic Structure of Yttrium and Americium

Yttrium
Americium
Atomic Structure of Americium and Yttrium


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