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Atomic Structure of Americium and Erbium


Atomic Structure of Erbium and Americium


Atomic Properties

Atomic Number
95   
23
68   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Xe] 4f12 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
HCP-Crystal-Structure-of-Erbium.jpg#100   

Atom
  
  

Number of Protons
95   
23
68   
99+

Number of Neutrons
148   
12
99   
33

Number of Electrons
95   
23
68   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
176.00 pm   
18

Covalent Radius
180.00 pm   
21
189.00 pm   
19

Van der Waals Radius
244.00 pm   
10
Not Available   

Atomic Weight
243.00 amu   
20
167.26 amu   
99+

Atomic Volume
17.86 cm3/mol   
29
18.40 cm3/mol   
25

Adjacent Atomic Numbers
  
  

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Curium
  
Thulium
  

Valence Electron Potential
44.00 (-eV)   
40
49.00 (-eV)   
29

Lattice Constant
346.81 pm   
99+
355.88 pm   
39

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

Lattice C/A Ratio
Not Available   
1.57   
17

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