1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Xe] 4f14 5d5 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
1.4.2 Number of Neutrons
1.4.3 Number of Electrons
1.5 Radius of an Atom
1.5.1 Atomic Radius
137.00 pm180.00 pm
112
265
1.5.2 Covalent Radius
151.00 pm198.00 pm
96
260
1.5.3 Van der Waals Radius
200.00 pm229.00 pm
139
348
1.6 Atomic Weight
186.21 amu150.36 amu
6.94
294
1.7 Atomic Volume
8.85 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
180.00 (-eV)44.80 (-eV)
8
392.42
1.10 Lattice Constant
276.10 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