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Atomic Structure of Technetium and 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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