Question

Lewis theory fails to explain the existence of:

• A. $S{F}_6$
• B. $Xe{F}_4$
• C. $N{O}_2$
• D. All of the above

Answer 1

The correct option is D All of the above

According to Lewis theory, the outer most shell of the element should have 8 electrons in it by transfer or sharing.
a) Sulphur hexaflouride $\left(S{F}_6\right)$ has extended octet.
b) Xenon tetrafluoride $\left(Xe{F}_4\right)$ involves noble gas element which has already complete octet.
c) $\left(N{O}_2\right)$ has odd number of electrons on $N$.
Hence, all of the above cannot be explained by Lewis theory.