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Osmium
Osmium

Promethium
Promethium



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Osmium
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Promethium

Atomic Structure of Osmium and Promethium

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1 Atomic
1.1 Atomic Number
7661
3 117
1.2 Electron Configuration
[Xe] 4f14 5d6 6s2
[Xe] 4f5 6s2
1.3 Crystal Structure
Hexagonal Close Packed (HCP)
Double Hexagonal Close Packed (DHCP)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
7661
3 117
1.4.2 Number of Neutrons
11484
4 184
1.4.3 Number of Electrons
7661
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
133.80 pm183.00 pm
112 265
1.5.2 Covalent Radius
NA199.00 pm
96 260
1.5.3 Van der Waals Radius
216.00 pm236.00 pm
139 348
1.6 Atomic Weight
190.23 amu145.00 amu
6.94 294
1.7 Atomic Volume
8.49 cm3/mol22.39 cm3/mol
1.39 71.07
1.8 Adjacent Atomic Numbers
1.8.1 Previous Element
1.8.2 Next Element
1.9 Valence Electron Potential
91.40 (-eV)44.10 (-eV)
8 392.42
1.10 Lattice Constant
273.44 pmNA
228.58 891.25
1.11 Lattice Angles
π/2, π/2, 2 π/3
Unknown
1.12 Lattice C/A Ratio
1.58NA
1.567 1.886