[Valheru]

In the benzene molecule, does each atom provide 2 electrons for the delocalised pi ring?

Would it be right to say that the 2s1 electron and 2p1 electron from each carbon bonds to adjacent carbons, and that the 2p2 and 2p3 electrons from each carbon orbit above and below the ring?

[cundi]

Reconsider your question! Use hybrid orbitals.
You only need to answer two questions, and then count electrons.
Which is the hybridation of the C in the benzene system?
Which are the two components in a double bond? (You can consider the benzene as 1,3,5-cyclohexatriene).

[Valheru]

Ok, so there are 3 sp2 hybrid electrons and one 2p electron?

Do the 3 sp2 electrons bond with the carbon on each side and the hydrogen, leaving one 2p electron from each atom to become delocalised?

(I haven't studied hybridisation so am struggling to understand what is meant by this. And i forgot the hydrogen atom in my first post!)

[cundi]

Right