Question

Describe the limitations of octet Rule..

Answer 1

Explanation: One limitationof the octet rule is that it cannot be applied to the nonmetals after silicon in the Periodic Table. These elements can “expand theiroctet” and have more than eight valence electrons around the central atom. ... In some molecules the central atom cannot possibly have eight valence electrons.

Answer 2

Answer:

The octet rule states that atoms can combine either by transferring or by sharing their valence electrons to attain an octet of electrons in their valence shell.

Explanation:

One limitation of the octet rule is that it cannot be applied to the nonmetals after silicon in the Periodic Table.

These elements can “expand their octet” and have more than eight valence electrons around the central atom.

Examples arePF5 , SF6, and H2SO4.

The P atom in PF5 has 10 electrons in its valence shell: