Which of the following compounds present exceptions to the octet rule ?

Question

Which of the following compounds present exceptions to the octet rule ?



a) SeF2


b) PCl3O


c) XeF6


d) ClO3-


e) NF3

Answer 1

The XeF6 is an obvious one, beacuse the Xe is normally an inert compund with an octet.

Do the Lewis dot formula to calculate the others. Add up the valence electrons and distribute. If you have left over electrons, then it will be an exception

Answer 2

PCl3O Because the compound has more than 8 electrons .
PCl3 follows the octet but due to additiona of O make it to disobey the Octet rule.

Answer 3

B, D, and E B. there will be a double bond with the oxygen and the three Cl molecules bonded to the P making 5 finished bonds D. there'll resonance in this shape and back could have extra advantageous than 4 bonds. i think of there will be 7. E. this could have a S with 3 O atoms linked to it. in spite of the incontrovertible fact that 2 of the O communities would be double bonded and one would be a single bond arising 5 bonds.