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Matas Vaitkevicius

How many isomers, with the formula c5h10, have structures that have a pi bond?

Chris Forgan  Follow

In order to answer your you need to calculate the number of unsaturations with the following formula :

DoU=(2C+2+N−X−H)/2

C being the number of carbon atoms, X the number of halogens, etc ..

DoU is the degree pf unsaturation.

Here, with C5H10, DoU=(2*5+2+0–0–10)/2=1

1 means that can have a one ring, as in (CH2)*5, or one double bond, or what you call a pi bound.

Check this website for more details :

Degree of Unsaturation

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Ava Naeini  Follow
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