1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Xe] 4f3 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
182.00 pm173.00 pm
112
265
1.5.2 Covalent Radius
203.00 pm180.00 pm
96
260
1.5.3 Van der Waals Radius
239.00 pm244.00 pm
139
348
1.6 Atomic Weight
140.91 amu243.00 amu
6.94
294
1.7 Atomic Volume
20.80 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
42.64 (-eV)44.00 (-eV)
8
392.42
1.10 Lattice Constant
367.25 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