1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Rn] 5f7 6d1 7s2
[Xe] 4f14 5d10 6s2
1.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Rhombohedral (RHO)
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
174.00 pm151.00 pm
112
265
1.5.2 Covalent Radius
169.00 pm132.00 pm
96
260
1.5.3 Van der Waals Radius
200.00 pm155.00 pm
139
348
1.6 Atomic Weight
247.00 amu200.59 amu
6.94
294
1.7 Atomic Volume
18.28 cm3/mol14.82 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
44.50 (-eV)28.20 (-eV)
8
392.42
1.10 Lattice Constant
NA300.50 pm
228.58
891.25
1.11 Lattice Angles
1.12 Lattice C/A Ratio