Question

Butene would have __ carbon atoms and a __ bond

Answer 1

Butene would have 4 carbon atoms and a double bond.

Step-by-step explanation:

The chemical formula for butene is C
`_4`H
`_8`

Here is an image of it.

Answer 2

we have

But :4

bond :ene :2

So

Butene would have _4_ carbon atoms and a _2_ bond