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Atomic Structure of Erbium and Americium


Atomic Structure of Americium and Erbium


Atomic Properties

Atomic Number
68   
99+
95   
23

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

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

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

Atom
  
  

Number of Protons
68   
99+
95   
23

Number of Neutrons
99   
33
148   
12

Number of Electrons
68   
99+
95   
23

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
173.00 pm   
21

Covalent Radius
189.00 pm   
19
180.00 pm   
21

Van der Waals Radius
Not Available   
244.00 pm   
10

Atomic Weight
167.26 amu   
99+
243.00 amu   
20

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

Adjacent Atomic Numbers
  
  

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Plutonium
  

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Thulium
  
Curium
  

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

Lattice Constant
355.88 pm   
39
346.81 pm   
99+

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

Lattice C/A Ratio
1.57   
17
Not Available   

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