Question

Which elemt form p pi p pi multiple bond with itself and with carbon and oxygen?

Answer 1

Nitrogen
The bond in nitrogen molecule is
N triple bond N in this the BO=3

And with carbon
C triple bond N in this the BO=3

And with oxygen
N double bond O in this B.O=2.5

so they all have pi bonds

Hope so this will help

Answer 2

Explanation:

carbon and nitrgen can from  mulitpul boinds with itslef and ogyen