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Actinide Series
Lanthanide Series
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Alkaline Earth Metals
Alkali Metals
f
Thallium
Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Atomic
Atomic Number
81 35
Electron Configuration
[Xe] 4f
14
5d
10
6s
2
6p
1
Crystal Structure
Hexagonal Close Packed (HCP)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
81 35
Number of Neutrons
123 21
Number of Electrons
81 35
Radius of an Atom
Atomic Radius
170.00 pm 24
Covalent Radius
145.00 pm 41
Van der Waals Radius
196.00 pm 37
Atomic Weight
204.38 amu 31
Atomic Volume
17.20 cm3/mol 45
Adjacent Atomic Numbers
Previous Element
8
Next Element
18
Valence Electron Potential
9.60 (-eV) 68
Lattice Constant
345.66 pm 50
Lattice Angles
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.60 23
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Post Transition Metals
Flerovium
Nihonium
Moscovium
Livermorium
Tennessine
Indium
Compare Post Transition Metals
Flerovium vs Tennessine
Flerovium vs Indium
Flerovium vs Polonium
Post Transition Metals
Polonium
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Gallium
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Bismuth
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Nihonium vs Flerovium
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Moscovium vs Flerovium
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Uses
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Physical
Livermorium vs Flerovium
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Uses
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» More Compare Post Transition Metals