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Generally the melting points of isomeric alkanes decreases with branching but among isomeric pentanes, neopentane with two branches has the highest me

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Generally the melting points of isomeric alkanes decreases with branching but among isomeric pentanes, neopentane with two branches has the highest melting point . Why is it so ? Explain.
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The reason being that neopentane is highly symmetrical . As a result, it fits closely in the lattice thereby increasing the forces of attraction and hence the melting point.
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