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Atomic Structure of Americium and Scandium


Atomic Structure of Scandium and Americium


Atomic Properties

Atomic Number
95   
23
21   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Ar] 3d1 4s2   

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

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

Atom
  
  

Number of Protons
95   
23
21   
99+

Number of Neutrons
148   
12
24   
99+

Number of Electrons
95   
23
21   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
162.00 pm   
26

Covalent Radius
180.00 pm   
21
170.00 pm   
25

Van der Waals Radius
244.00 pm   
10
211.00 pm   
25

Atomic Weight
243.00 amu   
20
44.96 amu   
99+

Atomic Volume
17.86 cm3/mol   
29
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

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Next Element
Curium
  
Titanium
  

Valence Electron Potential
44.00 (-eV)   
40
58.00 (-eV)   
24

Lattice Constant
346.81 pm   
99+
330.90 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.59   
7

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