1 Atomic
1.1 Atomic Number
1.3 Electron Configuration
1.4 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Body Centered Cubic (BCC)
1.4.1 Crystal Lattice
1.5 Atom
1.5.1 Number of Protons
1.5.3 Number of Neutrons
1.5.5 Number of Electrons
1.7 Radius of an Atom
1.7.1 Atomic Radius
1.7.2 Covalent Radius
1.7.3 Van der Waals Radius
1.8 Atomic Weight
251.00 amu226.00 amu
6.94
294
1.9 Atomic Volume
NA45.20 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
44.50 (-eV)20.10 (-eV)
8
392.42
1.12 Lattice Constant
338.00 pm514.80 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