(a)[3]
State the hybridisation of the carbon atoms in benzene, $\text{C}_6\text{H}_6$, and the C-C-H bond angle. Explain how orbital overlap produces $\sigma$ and $\pi$ bonds in benzene.
(b(i))[2]
Draw the structures of $X$ and $Y$ in Fig. 4.1.
(b(ii))[3]
State the reagents and conditions used in steps 1, 2 and 3.
(c)[1]
Compound $W$ is an isomer of $Z$. State the systematic name of $W$.
(d)[1]
Complete Table 4.1 by giving the number of peaks in the carbon-13 NMR spectrum for $W$ and $Z$.