Question

Explain all the limitations of the octet rule with examples.

Answer 1

Answer:

Explanation:

1) Expansion of orbit ( in some compound There are more than 8 electrons in single orbit)

Ex- PCl5

2) Lack of electron in Central atom

Ex-Becl2

3) odd electron molecule

Ex-No2, No, etc

Thank u

Answer 2

Answer:

Octet rule fails to explain the following:

(1) The stability of incomplete octet molecules, i.e., the molecules with the central atom containing less than eight electrons.

For example, $\sf{BeCl_2}, {BF_3}$.

(2) The stability of expanded octet molecules, i.e., the molecules with the central atom containing more than eight electrons.

For example, $\sf{PC_5}, {SF_6}$.

(3) Observed shape and geometry of the molecules.

(4) Difference in energies and reactivities of different molecules.