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Atomic Structure of Yttrium and Technetium

Yttrium
Technetium
Atomic Structure of Technetium and Yttrium


Atomic
Atomic Number
39  
99+
43  
99+
Electron Configuration
[Kr] 4d1 5s2  
[Kr] 4d5 5s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Yttrium.jpg#100  
HCP-Crystal-Structure-of-Technetium.jpg#100  
Atom
  
  
Number of Protons
39  
99+
43  
99+
Number of Neutrons
50  
99+
55  
99+
Number of Electrons
39  
99+
43  
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm  
16
136.00 pm  
99+
Covalent Radius
190.00 pm  
18
147.00 pm  
39
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
88.91 amu  
99+
98.00 amu  
99+
Atomic Volume
19.80 cm3/mol  
33
8.50 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Strontium
  
Molybdenum
  
Next Element
Zirconium
  
Ruthenium
  
Valence Electron Potential
48.00 (-eV)  
31
180.00 (-eV)  
3
Lattice Constant
364.74 pm  
34
273.50 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.57  
39
1.60  
21
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