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
178.00 pm173.00 pm
112
265
1.5.2 Covalent Radius
192.00 pm180.00 pm
96
260
1.5.3 Van der Waals Radius
229.00 pm244.00 pm
139
348
1.6 Atomic Weight
162.50 amu243.00 amu
6.94
294
1.7 Atomic Volume
19.00 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
47.40 (-eV)44.00 (-eV)
8
392.42
1.10 Lattice Constant
359.30 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