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Technetium
Technetium

Tantalum
Tantalum



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Atomic Structure of Technetium and Tantalum

1 Atomic
1.1 Atomic Number
4373
3 117
1.2 Electron Configuration
[Kr] 4d5 5s2
[Xe] 4f14 5d3 6s2
1.3 Crystal Structure
Hexagonal Close Packed (HCP)
Body Centered Cubic (BCC)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
4373
3 117
1.4.2 Number of Neutrons
55108
4 184
1.4.3 Number of Electrons
4373
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
136.00 pm146.00 pm
112 265
1.5.2 Covalent Radius
147.00 pm170.00 pm
96 260
1.5.3 Van der Waals Radius
200.00 pm200.00 pm
139 348
1.6 Atomic Weight
98.00 amu180.95 amu
6.94 294
1.7 Atomic Volume
8.50 cm3/mol10.90 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
180.00 (-eV)110.00 (-eV)
8 392.42
1.10 Lattice Constant
273.50 pm330.13 pm
228.58 891.25
1.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
1.12 Lattice C/A Ratio
1.60NA
1.567 1.886