MCQ & FRQ: Lewis (Dot) Structure: Octet Rule:每个原子周围都有8个电子Exception: Group 17—F, Cl, Br, I.. 只连一条键电负性越小---中心原子的优先项 FRQ: Resonance Structure, NO3, Formal charge 越接近0,越稳定,MCQ: Bond Order:键数(double bonds 算两个bonds)/ 成键数(double/triple bonds...
MCQ & FRQ: Lewis (Dot) Structure: Octet Rule:每个原子周围都有8个电子Exception: Group 17—F, Cl, Br, I.. 只连一条键电负性越小---中心原子的优先项 FRQ: Resonance Structure, NO3, Formal charge 越接近0,越稳定,MCQ: Bond Order:键数(double bonds 算两个bonds)/ 成键数(double/triple bonds...
MCQ & FRQ: Intermolecular Forces: the attraction between molecules IMF越强,熔点、沸点更高; 4 types of IMF: 1. London Dispersion Force (LDF):电子数目越多-higher polarizability-LDF越大;所有分子都有, FRQ写的时候问你有什么IMF的时候别忘了它 2. Dipole-Dipole Force: 极性分子和极性分子 3. Hydrog...