The incorrect statement among the following is [JEE Main 2025, 23 Jan (Shift 1)]

\({\mathrm{PF}}_{5}\mathrm{exist}\mathrm{but}{\mathrm{NF}}_{5}\mathrm{does}\mathrm{not}\)

\({\mathrm{SO}}_{2}\) can act as an oxidizing agent, but not as a reducing agent

\({\mathrm{PH}}_{3}\) shows lower proton affinity than \({\mathrm{NH}}_{3}\)

\({\mathrm{NO}}_{2}\) can dimerises easily