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Atomic Structure of Einsteinium and Lanthanum


Atomic Structure of Lanthanum and Einsteinium


Atomic

Atomic Number
99  
19
57  
99+

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

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

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

Atom
  
  

Number of Protons
99  
19
57  
99+

Number of Neutrons
153  
10
82  
99+

Number of Electrons
99  
19
57  
99+

Radius of an Atom
  
  

Atomic Radius
186.00 pm  
11
187.00 pm  
10

Covalent Radius
186.00 pm  
21
207.00 pm  
6

Van der Waals Radius
0.00 pm  
99+
240.00 pm  
17

Atomic Weight
252.00 amu  
16
138.91 amu  
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Barium
  

Next Element
Fermium
  
Cerium
  

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

Lattice Constant
582.00 pm  
8
377.20 pm  
31

Lattice Angles
-  
π/2, π/2, 2 π/3  

Lattice C/A Ratio
1.29  
99+
1.62  
16

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