1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Rn] 5f7 7s2
[Rn] 5f2 6d1 7s2
1.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Tetragonal (TETR)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
1.4.3 Number of Neutrons
1.5.1 Number of Electrons
1.7 Radius of an Atom
1.7.1 Atomic Radius
173.00 pm163.00 pm
112
265
1.7.2 Covalent Radius
180.00 pm200.00 pm
96
260
1.7.3 Van der Waals Radius
244.00 pm243.00 pm
139
348
1.8 Atomic Weight
243.00 amu231.04 amu
6.94
294
1.9 Atomic Volume
17.86 cm3/mol15.00 cm3/mol
1.39
71.07
1.10 Adjacent Atomic Numbers
1.10.1 Previous Element
1.10.2 Next Element
1.11 Valence Electron Potential
44.00 (-eV)92.00 (-eV)
8
392.42
1.12 Lattice Constant
346.81 pm392.50 pm
228.58
891.25
1.13 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
1.14 Lattice C/A Ratio