1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Xe] 4f14 5d10 6s2
[Rn] 5f7 7s2
1.3 Crystal Structure
Rhombohedral (RHO)
Double Hexagonal Close Packed (DHCP)
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
151.00 pm173.00 pm
112
265
1.5.2 Covalent Radius
132.00 pm180.00 pm
96
260
1.5.3 Van der Waals Radius
155.00 pm244.00 pm
139
348
1.6 Atomic Weight
200.59 amu243.00 amu
6.94
294
1.7 Atomic Volume
14.82 cm3/mol17.86 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
28.20 (-eV)44.00 (-eV)
8
392.42
1.10 Lattice Constant
300.50 pm346.81 pm
228.58
891.25
1.11 Lattice Angles
1.12 Lattice C/A Ratio