Q.
Assertion (A) Both rhombic and monoclinic sulphur exist as $S _{8}$ but oxygen exists as $O _{2}$.
Reason (R) Oxygen forms $p \pi-p \pi$ multiple bond due to small size and small bond length but $p \pi$ - $p \pi$ bonding is not possible in sulphur.
The p-Block Elements - Part2
Solution:
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
Both rhombic and monoclinic sulphur exist as $S _{8}$ but oxygen exists as $O _{2}$, because oxygen forms $p \pi-p \pi$ multiple bond due to its small size and small bond length.
But $p \pi-p \pi$ bonding is not possible in sulphur due to its bigger size as compared to oxygen.
