1. 按照离子性的增长程度排列下类键 a. H-F、F-F、K-F _______________________________ b. N-O、Br-Br、Na-Cl ______________________________2. 按照下列极性减小成都排列下列键 a. H-S、Cl-Cl、Na-S ____________________________ b. N-N、C-F、K-Br ____________________________