Home

Transition Metals + -

Actinide Metals + -

Lanthanide Metals + -

Post-Transition Metals + -

Alkaline Earth Metals + -

Compare Metals

Atomic Structure of Protactinium and Americium

Protactinium
Americium
Atomic Structure of Americium and Protactinium


Atomic Properties
Atomic Number
91   
27
95   
23
Electron Configuration
[Rn] 5f2 6d1 7s2   
[Rn] 5f7 7s2   
Crystal Structure
Tetragonal (TETR)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Atom
  
  
Number of Protons
91   
27
95   
23
Number of Neutrons
122   
21
148   
12
Number of Electrons
91   
27
95   
23
Radius of an Atom
  
  
Atomic Radius
163.00 pm   
25
173.00 pm   
21
Covalent Radius
200.00 pm   
11
180.00 pm   
21
Van der Waals Radius
243.00 pm   
11
244.00 pm   
10
Atomic Weight
231.04 amu   
24
243.00 amu   
20
Atomic Volume
15.00 cm3/mol   
34
17.86 cm3/mol   
29
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Plutonium
  
Next Element
Uranium
  
Curium
  
Valence Electron Potential
92.00 (-eV)   
11
44.00 (-eV)   
40
Lattice Constant
392.50 pm   
23
346.81 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical >>
<< Chemical

Compare Actinide Series

Actinide Metals

Actinide Metals

» More Actinide Metals

Compare Actinide Series

» More Compare Actinide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!