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Atomic Structure of Calcium and Curium

Calcium
Curium
Atomic Structure of Curium and Calcium


Atomic Properties
Atomic Number
20   
99+
96   
22
Electron Configuration
[Ar] 4s2   
[Rn] 5f7 6d1 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-Curium.jpg#100   
Atom
  
  
Number of Protons
20   
99+
96   
22
Number of Neutrons
20   
99+
151   
10
Number of Electrons
20   
99+
96   
22
Radius of an Atom
  
  
Atomic Radius
197.00 pm   
6
174.00 pm   
20
Covalent Radius
176.00 pm   
22
169.00 pm   
26
Van der Waals Radius
231.00 pm   
19
200.00 pm   
28
Atomic Weight
40.08 amu   
99+
247.00 amu   
18
Atomic Volume
29.90 cm3/mol   
7
18.28 cm3/mol   
26
Adjacent Atomic Numbers
  
  
Previous Element
Potassium
  
Americium
  
Next Element
Scandium
  
Berkelium
  
Valence Electron Potential
29.00 (-eV)   
99+
44.50 (-eV)   
38
Lattice Constant
558.84 pm   
9
Not Available   
Lattice Angles
π/2, π/2, π/2   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
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