Question

How many signs and pi bonds are present in each of the flowing molecules?
A.HC=CCH=CHCH3

Answer 1

Answer:

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Answer 2

Answer:

Firat, draw the expanded structure of your compound. Take note that carbon needs 4 bonds, thus if it has only 1 H then it means that itbis triply bonded to another C atom.

After drawing the expanded structure, you start counting. Single bonds are sigma bonds. For double bonds, one is sigma while the other is pi. Finally for triple bonds, one is sigma while the other two are pi.