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Atomic Structure of Thallium and Americium

Thallium
Americium
Atomic Structure of Americium and Thallium


Atomic Properties
Atomic Number
81   
35
95   
23
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Rn] 5f7 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Atom
  
  
Number of Protons
81   
35
95   
23
Number of Neutrons
123   
20
148   
12
Number of Electrons
81   
35
95   
23
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
173.00 pm   
21
Covalent Radius
145.00 pm   
39
180.00 pm   
21
Van der Waals Radius
196.00 pm   
30
244.00 pm   
10
Atomic Weight
204.38 amu   
31
243.00 amu   
20
Atomic Volume
17.20 cm3/mol   
31
17.86 cm3/mol   
29
Adjacent Atomic Numbers
  
  
Previous Element
Mercury
  
Plutonium
  
Next Element
Lead
  
Curium
  
Valence Electron Potential
9.60 (-eV)   
99+
44.00 (-eV)   
40
Lattice Constant
345.66 pm   
99+
346.81 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.60   
6
Not Available   
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