Home
Compare Metals


Atomic Structure of Scandium and Protactinium


Atomic Structure of Protactinium and Scandium


Atomic Properties

Atomic Number
21   
99+
91   
27

Electron Configuration
[Ar] 3d1 4s2   
[Rn] 5f2 6d1 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Tetragonal (TETR)   

Crystal Lattice
HCP-Crystal-Structure-of-Scandium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
21   
99+
91   
27

Number of Neutrons
24   
99+
122   
21

Number of Electrons
21   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
162.00 pm   
26
163.00 pm   
25

Covalent Radius
170.00 pm   
25
200.00 pm   
11

Van der Waals Radius
211.00 pm   
25
243.00 pm   
11

Atomic Weight
44.96 amu   
99+
231.04 amu   
24

Atomic Volume
15.00 cm3/mol   
34
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

Previous Element
Calcium
  
Thorium
  

Next Element
Titanium
  
Uranium
  

Valence Electron Potential
58.00 (-eV)   
24
92.00 (-eV)   
11

Lattice Constant
330.90 pm   
99+
392.50 pm   
23

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

Lattice C/A Ratio
1.59   
7
Not Available   

Mechanical >>
<< Chemical

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals