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Tantalum
Tantalum

Fermium
Fermium



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Tantalum
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Fermium

Atomic Structure of Tantalum and Fermium

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1 Atomic
1.1 Atomic Number
73100
3 117
1.2 Electron Configuration
[Xe] 4f14 5d3 6s2
[Rn] 5f12 7s2
1.3 Crystal Structure
Body Centered Cubic (BCC)
Not Known
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
73100
3 117
1.4.2 Number of Neutrons
108157
4 184
1.4.3 Number of Electrons
73100
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
146.00 pmNA
112 265
1.5.2 Covalent Radius
170.00 pmNA
96 260
1.5.3 Van der Waals Radius
200.00 pm245.00 pm
139 348
1.6 Atomic Weight
180.95 amu257.00 amu
6.94 294
1.7 Atomic Volume
10.90 cm3/molNA
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)NA
8 392.42
1.10 Lattice Constant
330.13 pmNA
228.58 891.25
1.11 Lattice Angles
π/2, π/2, π/2
NA
1.12 Lattice C/A Ratio
NANA
1.567 1.886