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Atomic Structure of Scandium and Radium


Atomic Structure of Radium and Scandium


Atomic Properties

Atomic Number
21   
99+
88   
30

Electron Configuration
[Ar] 3d1 4s2   
[Rn] 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Scandium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
21   
99+
88   
30

Number of Neutrons
24   
99+
138   
16

Number of Electrons
21   
99+
88   
30

Radius of an Atom
  
  

Atomic Radius
162.00 pm   
26
Not Available   

Covalent Radius
170.00 pm   
25
221.00 pm   
3

Van der Waals Radius
211.00 pm   
25
283.00 pm   
4

Atomic Weight
44.96 amu   
99+
226.00 amu   
26

Atomic Volume
15.00 cm3/mol   
34
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

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Titanium
  
Actinium
  

Valence Electron Potential
58.00 (-eV)   
24
20.10 (-eV)   
99+

Lattice Constant
330.90 pm   
99+
514.80 pm   
13

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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