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Atomic Structure of Technetium and Calcium


Atomic Structure of Calcium and Technetium


Atomic Properties

Atomic Number
43   
99+
20   
99+

Electron Configuration
[Kr] 4d5 5s2   
[Ar] 4s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
FCC-Crystal-Structure-of-Calcium.jpg#100   

Atom
  
  

Number of Protons
43   
99+
20   
99+

Number of Neutrons
55   
99+
20   
99+

Number of Electrons
43   
99+
20   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
197.00 pm   
6

Covalent Radius
147.00 pm   
37
176.00 pm   
22

Van der Waals Radius
200.00 pm   
28
231.00 pm   
19

Atomic Weight
98.00 amu   
99+
40.08 amu   
99+

Atomic Volume
8.50 cm3/mol   
99+
29.90 cm3/mol   
7

Adjacent Atomic Numbers
  
  

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Molybdenum
  
Potassium
  

Next Element
Ruthenium
  
Scandium
  

Valence Electron Potential
180.00 (-eV)   
3
29.00 (-eV)   
99+

Lattice Constant
273.50 pm   
99+
558.84 pm   
9

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

Lattice C/A Ratio
1.60   
5
Not Available   

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