What are the exceptions of the octet rule?

Question

What are the exceptions of the octet rule? (A) The incomplete octet of central atom (B) An odd number of electrons on central atom (C) Expanded octet of the central atom (D) All of these

Tardigrade Admin · Accepted Answer

According to octet rule, the central atom must have 8 electrons but in some compounds the number of electrons is more than 8, or less than 8 or an odd number of electrons is left on the central atom e.g., PF5, BCl3, NO.

Q. What are the exceptions of the octet rule?

The incomplete octet of central atom

An odd number of electrons on central atom

Expanded octet of the central atom

All of these

According to octet rule, the central atom must have $8$ electrons but in some compounds the number of electrons is more than $8$ , or less than $8$ or an odd number of electrons is left on the central atom e.g., $P F_{5}, BC l_{3}, NO$ .

Q. What are the exceptions of the octet rule?

The incomplete octet of central atom

An odd number of electrons on central atom

Expanded octet of the central atom

All of these

According to octet rule, the central atom must have 8 electrons but in some compounds the number of electrons is more than 8, or less than 8 or an odd number of electrons is left on the central atom e.g., PF5​,BCl3​,NO.

According to octet rule, the central atom must have $8$ electrons but in some compounds the number of electrons is more than $8$ , or less than $8$ or an odd number of electrons is left on the central atom e.g., $P F_{5}, BC l_{3}, NO$ .