Energetics of Organic Compunds!!!!!!!!!!help The energy of interaction between a Mg cation and a Cl anion is -4.000 x 10 -19 J What is the distance in Angstroms between these two ions? Enter a numerical answer only, do not enter units. i tried and tried and cant get this right also Lewis Structure of CNH Choose those statements that are true about the two best resonance structures for the molecule CNH a) One resonance structure has eight valence electrons and the other has ten valence electrons b) The best resonance structure has a single bond between the carbon and nitrogen atoms c) Both resonance structures have a single bond between the nitrogen and hydrogen atom. d) The best resonance structure has a triple bond between the carbon and nitrogen atoms e) The best resonance structure has a negative charge on nitrogen it cant be a, c is one of the answers, and the rest are troubling me.