Question

Which occurs at a larger a wavenumber​

Answer 1

The C-O stretch of phenol

Step-by-step explanation:

Electron delocalization causes the of the phenol to have partial double bond character, whereas the  of the cyclohexanol is a pure single bond. Again, we know as the bond order or bond strength increases the absorption occurs at larger wave number. So, the  stretch of the phenol occurs at larger wave number.