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Tantalum
Tantalum

Actinium
Actinium



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Tantalum
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Actinium

Atomic Structure of Tantalum and Actinium

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1 Atomic
1.1 Atomic Number
7389
3 117
1.2 Electron Configuration
[Xe] 4f14 5d3 6s2
[Rn] 6d1 7s2
1.3 Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
7389
3 117
1.4.2 Number of Neutrons
108138
4 184
1.4.3 Number of Electrons
7389
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
146.00 pm195.00 pm
112 265
1.5.2 Covalent Radius
170.00 pmNA
96 260
1.5.3 Van der Waals Radius
200.00 pmNA
139 348
1.6 Atomic Weight
180.95 amu227.00 amu
6.94 294
1.7 Atomic Volume
10.90 cm3/mol22.54 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)38.60 (-eV)
8 392.42
1.10 Lattice Constant
330.13 pm567.00 pm
228.58 891.25
1.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
1.12 Lattice C/A Ratio
NANA
1.567 1.886