Question

A `sigma` bond is the same thing as a single bond. So what is a `pi` bond?

Answer 1

Here's the answer...

Explanation:

`color(red)(sigma) "bonds"` are the formed by the overlapping of the `(s-p)` or, `(s-s)` orbitals by head on overlapping...such as in the picture...

`" "`(S-S) OVERLAPPING

`" "`(S-P) OVERLAPPING

`" "`(P-P) OVERLAPPING

These three types of structure are mainly involved in producing `color(red)(sigma)"bonds"`....which emans single bonds...

But some time we see that there is `C-=C` bonds or, `C=C` bonds...
`" "`Here in the first case ,there is one `sigma` bond but the other bond is the`pi` bond who contains loose electrons but strengthens the whole bond formation...
`" "`In the `2nd` case there is two `pi`bonds... which produces by following type of overlapping(`color(red)("(side-wise overlapping)"`...

`" "` (P-P) SIDE-WISE OVERLAPPING

Hope it helps...
Thank you...