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Tantalum
Tantalum

Osmium
Osmium



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Tantalum
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Osmium

Atomic Structure of Tantalum and Osmium

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1 Atomic
1.1 Atomic Number
7376
3 117
1.2 Electron Configuration
[Xe] 4f14 5d3 6s2
[Xe] 4f14 5d6 6s2
1.3 Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
7376
3 117
1.4.2 Number of Neutrons
108114
4 184
1.4.3 Number of Electrons
7376
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
146.00 pm133.80 pm
112 265
1.5.2 Covalent Radius
170.00 pmNA
96 260
1.5.3 Van der Waals Radius
200.00 pm216.00 pm
139 348
1.6 Atomic Weight
180.95 amu190.23 amu
6.94 294
1.7 Atomic Volume
10.90 cm3/mol8.49 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
110.00 (-eV)91.40 (-eV)
8 392.42
1.10 Lattice Constant
330.13 pm273.44 pm
228.58 891.25
1.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
1.12 Lattice C/A Ratio
NA1.58
1.567 1.886