1. The problem statement, all variables and given/known data Which of the following compounds contains both 2c-2e bond and 3c-4e bond? A) Be2Cl4 B) B2Cl4 C) (SnCl2)∞ D) both A and C 3. The attempt at a solution For 3c-4e bond, there must be 3 atoms present. So correct option should be C but the answer is D.