Question

Can I draw bond line notations for molecules containing double and triple bonds? How?

Answer 1

First, you draw the carbon skeleton. Then you insert the double and triple bonds. Finally, you add the H atoms.

Explanation:

Assume that you want to draw the bond-line structure of pent-3-en-1-yne.

You start by drawing a chain of five carbon atoms.

Number the carbon atoms from left to right.

Put a triple bond between C-1 and C-2, and a triple bond between C-3 and C-4.

Finally, add enough hydrogen atoms to give each carbon atom a total of four bonds

And you have the bond-line structure of pent-3-en-1-yne.