Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Both rhombic and monoclinic sulphur exist as S8 while oxygen exists as O2. Reason (R) : Oxygen forms pπ−pπ multiple bonds with itself and other elements having small size and high electronegativity like C,N, which is not possible for sulphur. In the light of the above statements, choose the most appropriate answer from the options given below :
Held on 9 Apr 2024 · Verified 6 Jul 2026.
(A) is correct but (R) is not correct
(A) is not correct but (R) is correct
Both (A) and (R) are correct and (R) is the correct explanation of (A)
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
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First and second ionization enthalpies of lithium are $520$ kJ mol$^{-1}$ and $7297$ kJ mol$^{-1}$ respectively. Energy required to convert $3.5$ mg lithium (g) into $\text{Li}^{2+}$(g) $[\text{Li(g)} \rightarrow \text{Li}^{2+}\text{(g)}]$ is _______ kJ mol$^{-1}$. (nearest integer) [Molar mass of Li $= 7$ g mol$^{-1}$]
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Work through every JEE Main Inorganic Chemistry PYQ, year by year.