1 Atomic
1.1 Atomic Number
1.2 Electron Configuration
[Rn] 5f10 7s2
[Rn] 5f7 7s2
1.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Double Hexagonal Close Packed (DHCP)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
2.1.1 Number of Neutrons
2.3.1 Number of Electrons
2.4 Radius of an Atom
2.4.1 Atomic Radius
186.00 pm173.00 pm
112
265
2.5.1 Covalent Radius
2.5.2 Van der Waals Radius
2.7 Atomic Weight
251.00 amu243.00 amu
6.94
294
2.9 Atomic Volume
NA17.86 cm3/mol
1.39
71.07
2.10 Adjacent Atomic Numbers
2.10.1 Previous Element
2.10.2 Next Element
2.11 Valence Electron Potential
44.50 (-eV)44.00 (-eV)
8
392.42
2.12 Lattice Constant
338.00 pm346.81 pm
228.58
891.25
2.13 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
2.14 Lattice C/A Ratio