Magenta means negative potential energy. Again this shows where the proton would want to go and hence, where the lone pair is. Lone pairs chose the largest site, e.g. equatorial in trigonal bipyramidal. If all sites are equal, lone pairs will be trans to each other. XeF 4 3.
Double bonds occupy more space than single bonds.
SOF 4 Stick and ball model of SOF 4 . Bonding electron density isosurface. Electron density contour plot. Bonding pairs to electronegative substituents occupy less space than those to more electropositive substituents. 2- SO 2 SF 4 Electron density contour plot of SF 4 .