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In cumulene, what are the c=c=c and h−c−h bond angles, respectively? enter the c=c=c bond angle followed by the h−c−h bond angle separated by a comma.

User Shakari
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180 degrees, 120 degrees. The Carbon are all in a straight chain, with the Hydrogen at angles at the end. From VSEPR theory, the Carbons bond in an AX2 system, and the H C H bond is an AX3 system, which provide the two different angles.
User Bshacklett
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