Exceptions to the octet rule:BF3,PCls,SF et al B:2S22P1,F:2S22P5 The octet rule and Lewis structure do not present a complete picture of covalent bondingExceptions to the octet rule: BF3 , PCl5 , SF6 et al B: 2S22P1 ; F: 2S22P5 The octet rule and Lewis structure do not present a complete picture of covalent bonding