Amongst the given options, the compound (s) in which all the atoms are in one plane in all the possible conformations (if any), is (are)

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Aicharya · Accepted Answer

$ 	ext { In both (b) and (c), all the atoms are present in one single plane } $ In (a) 1, 3-butadiene, conformational change is possible between $\mathrm{C}_2-\mathrm{C}_3$ bond in which atoms will be present in more than one single plane. In (d) allene, the terminals $\mathrm{H}-\mathrm{C}-\mathrm{H}$ planes are perpendicular to one another. $ 	ext { Paragraph (12 and 13) The final ozonolysis product indicates that the alkene before } $ Ozonolysis is Also $\mathrm{P}\left(\mathrm{C}_6 \mathrm{H}_{10}ight)$ has two degree of unsaturation and oxymercuration demercuration hydration indicates that it is an alkyne. As alkyne, on hydration, gives a carbonyl compound which on reduction with $\mathrm{NaBH}_4$ gives a $2^{\circ}$ alcohol.

Amongst the given options, the compound (s) in which all the atoms are in one plane in all the possible…

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