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Atomic Structure of Scandium and Neptunium


Atomic Structure of Neptunium and Scandium


Atomic Properties

Atomic Number
21   
99+
93   
25

Electron Configuration
[Ar] 3d1 4s2   
[Rn] 5f4 6d1 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Orthorhombic (ORTH)   

Crystal Lattice
HCP-Crystal-Structure-of-Scandium.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   

Atom
  
  

Number of Protons
21   
99+
93   
25

Number of Neutrons
24   
99+
144   
14

Number of Electrons
21   
99+
93   
25

Radius of an Atom
  
  

Atomic Radius
162.00 pm   
26
155.00 pm   
30

Covalent Radius
170.00 pm   
25
190.00 pm   
18

Van der Waals Radius
211.00 pm   
25
221.00 pm   
22

Atomic Weight
44.96 amu   
99+
237.00 amu   
22

Atomic Volume
15.00 cm3/mol   
34
11.62 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Calcium
  
Uranium
  

Next Element
Titanium
  
Plutonium
  

Valence Electron Potential
58.00 (-eV)   
24
96.00 (-eV)   
9

Lattice Constant
330.90 pm   
99+
666.30 pm   
3

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

Lattice C/A Ratio
1.59   
7
Not Available   

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