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प्रश्न
Out of o-and p-dibromobenzene which one has higher melting point and why?
उत्तर
p-Dibromobenzenc has higher melting point than its o-isomer.
It is due to symmetry of p-isomer which fits in crystal lattice better than the o-isomer.
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संबंधित प्रश्न
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(a) \[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
\backslash\phantom{.............}\\
\ce{CH - CH2Br}\\
/\phantom{.............}\\
\ce{CH3}\phantom{.................}
\end{array}\]
(b) \[\ce{CH3CH2CH2CH2Br}\]
(c) \[\begin{array}{cc}
\phantom{...}\ce{CH3}\\
\phantom{}|\\
\ce{H3C - C - CH3}\\
\phantom{}|\\
\phantom{..}\ce{Br}
\end{array}\]
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\[\ce{RI > RBr > RCl > RF}\]
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