Which statement(s) about the octet rule is (are) false?

select all that apply


A. In order to obey the octet rule, some atoms have to share more than one pair of electrons.


B. Atoms are most stable when surrounded by eight electrons.


C. All free atoms contribute eight valence electrons to form molecules.


D. The oxygen atom can have an expandable octet.


E. The octet rule can be violated.Which statement(s) about the octet rule is (are) false?
A: true in case of Coordinate bond.


B: True


C: True


D: False


E: True ( consider example of PCl5 and BF3, BeCl2)