In the given organic compound, the carbon atoms numbered as \(1,2,3,4,5,\) and \(6\) are \(s p, s p, s p^{3}, s p^{3}, s p^{2},\) and \(s p^{2}\) hybridized respectively. Thus, the pair of hybridized orbitals involved in the formation of \(C _{2}- C _{3}\) bond is \(s p-s p^{3}\)





$\,{H_3}C\, - \,\,\mathop C\limits^{\mathop {||}\limits^O } \,\, - \,\,\mathop C\limits^{\mathop |\limits^{OH} } H\,\, - \,\,\mathop C\limits^{\mathop |\limits^{N{O_2}} } H\,\, - \,\,C{O_2}H$
