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Atomic Structure of Lanthanum and Potassium


Atomic Structure of Potassium and Lanthanum


Atomic Properties

Atomic Number
57   
99+
19   
99+

Electron Configuration
[Xe] 5d2 6s2   
[Ar] 4s1   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
57   
99+
19   
99+

Number of Neutrons
82   
99+
20   
99+

Number of Electrons
57   
99+
19   
99+

Radius of an Atom
  
  

Atomic Radius
187.00 pm   
8
227.00 pm   
3

Covalent Radius
207.00 pm   
6
203.00 pm   
9

Van der Waals Radius
240.00 pm   
13
275.00 pm   
5

Atomic Weight
138.91 amu   
99+
39.10 amu   
99+

Atomic Volume
20.73 cm3/mol   
16
45.46 cm3/mol   
3

Adjacent Atomic Numbers
  
  

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Barium
  
Aluminium
  

Next Element
Cerium
  
Calcium
  

Valence Electron Potential
40.71 (-eV)   
99+
10.40 (-eV)   
99+

Lattice Constant
377.20 pm   
28
532.80 pm   
12

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

Lattice C/A Ratio
1.62   
2
Not Available   

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