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Polonium
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Protactinium
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Polonium
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Protactinium
Atomic Structure of Polonium and Protactinium
Polonium
Protactinium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Atomic
Atomic Number
84
91
3
117
👆🏻
Electron Configuration
[Xe] 4f
14
5d
10
6s
2
6p
4
[Rn] 5f
2
6d
1
7s
2
Crystal Structure
Monoclinic (MON)
Tetragonal (TETR)
Crystal Lattice
Atom
Number of Protons
84
91
3
117
👆🏻
Number of Neutrons
125
122
4
285
👆🏻
Number of Electrons
84
91
3
117
👆🏻
Radius of an Atom
Atomic Radius
168.00 pm
163.00 pm
0
348
👆🏻
Covalent Radius
140.00 pm
200.00 pm
0
260
👆🏻
Van der Waals Radius
197.00 pm
243.00 pm
0
348
👆🏻
Atomic Weight
209.00 amu
231.04 amu
6.94
294
👆🏻
Atomic Volume
22.23 cm3/mol
15.00 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
9.30 (-eV)
92.00 (-eV)
0
392.42
👆🏻
Lattice Constant
335.90 pm
392.50 pm
0
891.25
👆🏻
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
1.46
1.58
0.423
1.9
👆🏻
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