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