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Atomic Structure of Potassium and Protactinium


Atomic Structure of Protactinium and Potassium


Atomic Properties

Atomic Number
19   
99+
91   
27

Electron Configuration
[Ar] 4s1   
[Rn] 5f2 6d1 7s2   

Crystal Structure
Body Centered Cubic (BCC)   
Tetragonal (TETR)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
19   
99+
91   
27

Number of Neutrons
20   
99+
122   
21

Number of Electrons
19   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
227.00 pm   
3
163.00 pm   
25

Covalent Radius
203.00 pm   
9
200.00 pm   
11

Van der Waals Radius
275.00 pm   
5
243.00 pm   
11

Atomic Weight
39.10 amu   
99+
231.04 amu   
24

Atomic Volume
45.46 cm3/mol   
3
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

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Calcium
  
Uranium
  

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

Lattice Constant
532.80 pm   
12
392.50 pm   
23

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

Lattice C/A Ratio
Not Available   
Not Available   

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