O ELECTRONIC STRUCTURE AND CHEMICAL BONDING Recognizing exceptions to the octet rule Decide whether the Lewis structure proposed for each molecule is reasonable or not. molecule proposed Lewis structure Is this a reasonable structure? If not, why not? IFA :: \/ . .. :C: Yes, it's a reasonable structure. F F No, the total number of valence electrons is wrong. The correct number is: :F F: No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: Yes, it's a reasonable structure. No, the total number of valence electrons is wrong. , 1 The correct number is: D : C BCI No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 Yes, it's a reasonable structure. :F: No, the total number of valence electrons is wrong. CIF: II The correct number is: D :F-C-F: No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: I * If two or more atoms have the wrong number of valence electrons around them, just enter the chemical symbol for the atom as many times as necessary. For example, if two oxygen atoms have the wrong number of electrons