Home

Transition Metals + -

Actinide Metals + -

Lanthanide Metals + -

Post-Transition Metals + -

Alkaline Earth Metals + -

Compare Metals

Atomic Structure of Protactinium and Lanthanum

Protactinium
Lanthanum
Atomic Structure of Lanthanum and Protactinium


Atomic Properties
Atomic Number
91   
27
57   
99+
Electron Configuration
[Rn] 5f2 6d1 7s2   
[Xe] 5d2 6s2   
Crystal Structure
Tetragonal (TETR)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
Atom
  
  
Number of Protons
91   
27
57   
99+
Number of Neutrons
122   
21
82   
99+
Number of Electrons
91   
27
57   
99+
Radius of an Atom
  
  
Atomic Radius
163.00 pm   
25
187.00 pm   
8
Covalent Radius
200.00 pm   
11
207.00 pm   
6
Van der Waals Radius
243.00 pm   
11
240.00 pm   
13
Atomic Weight
231.04 amu   
24
138.91 amu   
99+
Atomic Volume
15.00 cm3/mol   
34
20.73 cm3/mol   
16
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Barium
  
Next Element
Uranium
  
Cerium
  
Valence Electron Potential
92.00 (-eV)   
11
40.71 (-eV)   
99+
Lattice Constant
392.50 pm   
23
377.20 pm   
28
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.62   
2
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!