1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Rn] 5f12 7s2
[Xe] 4f3 6s2
1.3 Crystal Structure
Not Known
Hexagonal Close Packed (HCP)
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
1.5.2 Covalent Radius
1.5.3 Van der Waals Radius
245.00 pm239.00 pm
139
348
1.6 Atomic Weight
257.00 amu140.91 amu
6.94
294
1.7 Atomic Volume
NA20.80 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
1.10 Lattice Constant
NA367.25 pm
228.58
891.25
1.11 Lattice Angles
1.12 Lattice C/A Ratio