exceptions to the octect rule?

Question

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


a) NH4+


b) XeF4O


c) XeO4


d) ClO3-


e) NF3


you must enter all true statements alphabetically in one lower case group,
e.g., if a) b) and e) are true you would enter abe

Answer 1

b





None of the others violate the octet rule b/c four or less atoms are bonded to them.

Answer 2

I just realized its O3 - not O 3-.

in that case the answer is only b.

Answer 3

be