1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Xe] 4f3 6s2
[Rn] 5f13 7s2
1.3 Crystal Structure
Hexagonal Close Packed (HCP)
Not Known
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
239.00 pm246.00 pm
139
348
1.6 Atomic Weight
140.91 amu258.00 amu
6.94
294
1.7 Atomic Volume
20.80 cm3/molNA
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
367.25 pmNA
228.58
891.25
1.11 Lattice Angles
1.12 Lattice C/A Ratio