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Atomic Structure of Lanthanum and Einsteinium


Atomic Structure of Einsteinium and Lanthanum


Atomic

Atomic Number
57  
99+
99  
19

Electron Configuration
[Xe] 5d2 6s2  
[Rn] 5f11 7s2  

Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  

Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100  
FCC-Crystal-Structure-of-Einsteinium.jpg#100  

Atom
  
  

Number of Protons
57  
99+
99  
19

Number of Neutrons
82  
99+
153  
10

Number of Electrons
57  
99+
99  
19

Radius of an Atom
  
  

Atomic Radius
187.00 pm  
10
186.00 pm  
11

Covalent Radius
207.00 pm  
6
186.00 pm  
21

Van der Waals Radius
240.00 pm  
17
0.00 pm  
99+

Atomic Weight
138.91 amu  
99+
252.00 amu  
16

Atomic Volume
20.73 cm3/mol  
26
17.04 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

Previous Element
Barium
  

Next Element
Cerium
  
Fermium
  

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

Lattice Constant
377.20 pm  
31
582.00 pm  
8

Lattice Angles
π/2, π/2, 2 π/3  
-  

Lattice C/A Ratio
1.62  
16
1.29  
99+

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