Memory Game Lewis StructuresOnline version Formal Charges, Resonance structures by Marissa Corr zero on all elements, or has the negative charge on the most electronegative atom. The molecular geometry of SO2 is The most stable resonance charge has a formal charge that is: 1, 3 1, 2, 8 The molecular geometry of CF4 is Tetrahedral # valence electrons - 1/2(# bonding e's) - (# non-bonding e's) Formula for formal charge 7- (.5)(2) - 6 =0 Bent 18 3, 1 What is the mathematical process of finding the formal charge of Cl in HCl? How many single bonds and how many lone pairs does HCl contain?