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