1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Rn] 5f3 6d1 7s2
[Xe] 4f6 6s2
1.3 Crystal Structure
Orthorhombic (ORTH)
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
156.00 pm180.00 pm
112
265
1.5.2 Covalent Radius
196.00 pm198.00 pm
96
260
1.5.3 Van der Waals Radius
186.00 pm229.00 pm
139
348
1.6 Atomic Weight
238.03 amu150.36 amu
6.94
294
1.7 Atomic Volume
12.59 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
170.00 (-eV)44.80 (-eV)
8
392.42
1.10 Lattice Constant
295.08 pm362.10 pm
228.58
891.25
1.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
1.12 Lattice C/A Ratio