get_molec_props('CH4')
#> Symbol Element AtomicNumber AtomicMass Density AtomicRadius Config
#> 1 C Carbon 6 12.011 2.267e+00 67 [He] 2s2 2p2
#> 2 H Hydrogen 1 1.008 8.988e-05 53 1s1
#> ShellConfig OxiStates
#> 1 2,4,,,,, -4,-3,-2,-1,0,1,2,3,4
#> 2 1,,,,,, 1