1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Xe] 4f14 5d10 6s2 6p3
[Rn] 5f6 7s2
1.3 Crystal Structure
Rhombohedral (RHO)
Monoclinic (MON)
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 pm159.00 pm
112
265
1.5.2 Covalent Radius
148.00 pm187.00 pm
96
260
1.5.3 Van der Waals Radius
207.00 pm200.00 pm
139
348
1.6 Atomic Weight
208.98 amu244.00 amu
6.94
294
1.7 Atomic Volume
21.30 cm3/mol12.32 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
41.90 (-eV)64.90 (-eV)
8
392.42
1.10 Lattice Constant
667.40 pm618.30 pm
228.58
891.25
1.11 Lattice Angles
1.12 Lattice C/A Ratio