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Atomic Structure of Technetium and Americium

Technetium
Americium
Atomic Structure of Americium and Technetium


Atomic Properties
Atomic Number
43   
99+
95   
23
Electron Configuration
[Kr] 4d5 5s2   
[Rn] 5f7 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Atom
  
  
Number of Protons
43   
99+
95   
23
Number of Neutrons
55   
99+
148   
12
Number of Electrons
43   
99+
95   
23
Radius of an Atom
  
  
Atomic Radius
136.00 pm   
99+
173.00 pm   
21
Covalent Radius
147.00 pm   
37
180.00 pm   
21
Van der Waals Radius
200.00 pm   
28
244.00 pm   
10
Atomic Weight
98.00 amu   
99+
243.00 amu   
20
Atomic Volume
8.50 cm3/mol   
99+
17.86 cm3/mol   
29
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Plutonium
  
Next Element
Ruthenium
  
Curium
  
Valence Electron Potential
180.00 (-eV)   
3
44.00 (-eV)   
40
Lattice Constant
273.50 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   
5
Not Available   
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