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Scandium
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Technetium
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Scandium
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Technetium
Atomic Structure of Scandium and Technetium
Scandium
Technetium
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Summary
Periodic Table
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Physical
Chemical
Atomic
Mechanical
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Thermal
All
Atomic
Atomic Number
21
43
3
117
👆🏻
Electron Configuration
[Ar] 3d
1
4s
2
[Kr] 4d
5
5s
2
Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
Crystal Lattice
Atom
Number of Protons
21
43
3
117
👆🏻
Number of Neutrons
24
55
4
285
👆🏻
Number of Electrons
21
43
3
117
👆🏻
Radius of an Atom
Atomic Radius
162.00 pm
136.00 pm
0
348
👆🏻
Covalent Radius
170.00 pm
147.00 pm
0
260
👆🏻
Van der Waals Radius
211.00 pm
200.00 pm
0
348
👆🏻
Atomic Weight
44.96 amu
98.00 amu
6.94
294
👆🏻
Atomic Volume
15.00 cm3/mol
8.50 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
58.00 (-eV)
180.00 (-eV)
0
392.42
👆🏻
Lattice Constant
330.90 pm
273.50 pm
0
891.25
👆🏻
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.59
1.60
0.423
1.9
👆🏻
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