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Hafnium
Hafnium

Samarium
Samarium



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Hafnium
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Samarium

Atomic Structure of Hafnium and Samarium

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1 Atomic
1.1 Atomic Number
7262
3 117
1.2 Electron Configuration
[Xe] 4f14 5d2 6s2
[Xe] 4f6 6s2
1.3 Crystal Structure
Hexagonal Close Packed (HCP)
Rhombohedral (RHO)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
7262
3 117
1.4.2 Number of Neutrons
10688
4 184
1.4.3 Number of Electrons
7262
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
159.00 pm180.00 pm
112 265
1.5.2 Covalent Radius
175.00 pm198.00 pm
96 260
1.5.3 Van der Waals Radius
200.00 pm229.00 pm
139 348
1.6 Atomic Weight
178.49 amu150.36 amu
6.94 294
1.7 Atomic Volume
13.60 cm3/mol19.95 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
81.00 (-eV)44.80 (-eV)
8 392.42
1.10 Lattice Constant
319.64 pm362.10 pm
228.58 891.25
1.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
1.12 Lattice C/A Ratio
1.58NA
1.567 1.886