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Atomic Structure of Calcium and Americium


Atomic Structure of Americium and Calcium


Atomic Properties

Atomic Number
20   
99+
95   
23

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

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

Crystal Lattice
FCC-Crystal-Structure-of-Calcium.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   

Atom
  
  

Number of Protons
20   
99+
95   
23

Number of Neutrons
20   
99+
148   
12

Number of Electrons
20   
99+
95   
23

Radius of an Atom
  
  

Atomic Radius
197.00 pm   
6
173.00 pm   
21

Covalent Radius
176.00 pm   
22
180.00 pm   
21

Van der Waals Radius
231.00 pm   
19
244.00 pm   
10

Atomic Weight
40.08 amu   
99+
243.00 amu   
20

Atomic Volume
29.90 cm3/mol   
7
17.86 cm3/mol   
29

Adjacent Atomic Numbers
  
  

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Plutonium
  

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Scandium
  
Curium
  

Valence Electron Potential
29.00 (-eV)   
99+
44.00 (-eV)   
40

Lattice Constant
558.84 pm   
9
346.81 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

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