1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Xe] 4f9 6s2
[Rn] 5f7 7s2
1.3 Crystal Structure
Hexagonal Close Packed (HCP)
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
177.00 pm173.00 pm
112
265
1.5.2 Covalent Radius
194.00 pm180.00 pm
96
260
1.5.3 Van der Waals Radius
221.00 pm244.00 pm
139
348
1.6 Atomic Weight
158.93 amu243.00 amu
6.94
294
1.7 Atomic Volume
19.20 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
46.80 (-eV)44.00 (-eV)
8
392.42
1.10 Lattice Constant
360.10 pm346.81 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