# Π(pi)-bonding ?

1. Aug 15, 2006

### kaitoufion

I just had an MC exercise but am not very sure on the answers for the following questions

Can someone help me plz? There are 2 short questions in total.

Which of the following contain localised (but not delocalised) π(pi)-bonding?

BeF2
CO3(2-)
CO2
H2CO
H2O
NO3(1-)
SF4
O3

Which of the following contain delocalised π(pi)-bonding?

BeF2
CO3(2-)
CO2
H2CO
H2O
NO3(1-)
SF4
O3