hi.. the unserlined carbon is forming 2 pie-bonds, one on each side. Hence it must have two unhybridized orbitlas. Also its forming 2 sigma bonda with two carbon atoms, one on each side, so they must be formed by hybridized orbitals..
hence two hybridized orbitals and two unhybridized orbitals.. what u obtain in the case of sp-hybridisation...
hope its v.clear...
Also, these class of compounds are called as allenes or "cumulated dienes".
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Moderation Team
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