JEE Main Chemistry question

In the allene structure, the three carbon atoms are joined by

(A)Three - and three -bonds
(B)Two - and one -bond
(C)Two - and two -bondsCorrect
(D)Three -bonds only

Answer: (C)

Solution

Allene () has a central carbon doubly bonded to each of the two terminal carbons. Each C=C double bond consists of one sigma and one pi bond, so across the two double bonds (C1=C2 and C2=C3) there are 2

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Question ID VK-133397