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Atomic Structure of Calcium and Roentgenium


Atomic Structure of Roentgenium and Calcium


Atomic Properties

Atomic Number
20   
99+
111   
7

Electron Configuration
[Ar] 4s2   
[Rn] 5f14 6d9 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Calcium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
20   
99+
111   
7

Number of Neutrons
20   
99+
161   
3

Number of Electrons
20   
99+
111   
7

Radius of an Atom
  
  

Atomic Radius
197.00 pm   
6
Not Available   

Covalent Radius
176.00 pm   
22
Not Available   

Van der Waals Radius
231.00 pm   
19
Not Available   

Atomic Weight
40.08 amu   
99+
281.00 amu   
6

Atomic Volume
29.90 cm3/mol   
7
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Potassium
  

Next Element
Scandium
  

Valence Electron Potential
29.00 (-eV)   
99+
Not Available   

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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