1 Atomic
1.1 Atomic Number
2.3 Electron Configuration
[Rn] 5f10 7s2
[Ar] 3d5 4s1
2.4 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Body Centered Cubic (BCC)
2.4.1 Crystal Lattice
2.5 Atom
2.5.1 Number of Protons
2.5.2 Number of Neutrons
2.6.2 Number of Electrons
2.7 Radius of an Atom
2.7.1 Atomic Radius
186.00 pm128.00 pm
112
265
2.7.3 Covalent Radius
2.7.5 Van der Waals Radius
2.8 Atomic Weight
251.00 amu52.00 amu
6.94
294
2.9 Atomic Volume
NA7.23 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)170.00 (-eV)
8
392.42
2.13 Lattice Constant
338.00 pm291.00 pm
228.58
891.25
2.15 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
2.16 Lattice C/A Ratio