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Hafnium
Hafnium

Fermium
Fermium



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Hafnium
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Fermium

Atomic Structure of Hafnium and Fermium

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1 Atomic
1.1 Atomic Number
72100
3 117
1.2 Electron Configuration
[Xe] 4f14 5d2 6s2
[Rn] 5f12 7s2
1.3 Crystal Structure
Hexagonal Close Packed (HCP)
Not Known
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
72100
3 117
1.4.2 Number of Neutrons
106157
4 184
1.4.3 Number of Electrons
72100
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
159.00 pmNA
112 265
1.5.2 Covalent Radius
175.00 pmNA
96 260
1.5.3 Van der Waals Radius
200.00 pm245.00 pm
139 348
1.6 Atomic Weight
178.49 amu257.00 amu
6.94 294
1.7 Atomic Volume
13.60 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
81.00 (-eV)NA
8 392.42
1.10 Lattice Constant
319.64 pmNA
228.58 891.25
1.11 Lattice Angles
π/2, π/2, 2 π/3
NA
1.12 Lattice C/A Ratio
1.58NA
1.567 1.886