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Atomic Structure of Neodymium and Protactinium


Atomic Structure of Protactinium and Neodymium


Atomic Properties

Atomic Number
60   
99+
91   
27

Electron Configuration
[Xe] 4f4 6s2   
[Rn] 5f2 6d1 7s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Tetragonal (TETR)   

Crystal Lattice
DHCP-Crystal-Structure-of-Neodymium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
60   
99+
91   
27

Number of Neutrons
84   
40
122   
21

Number of Electrons
60   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
181.00 pm   
13
163.00 pm   
25

Covalent Radius
201.00 pm   
10
200.00 pm   
11

Van der Waals Radius
229.00 pm   
20
243.00 pm   
11

Atomic Weight
144.24 amu   
99+
231.04 amu   
24

Atomic Volume
20.60 cm3/mol   
18
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

Previous Element
Thorium
  

Next Element
Promethium
  
Uranium
  

Valence Electron Potential
43.40 (-eV)   
99+
92.00 (-eV)   
11

Lattice Constant
365.80 pm   
30
392.50 pm   
23

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.61   
4
Not Available   

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