Which one of the following does not exist?
$(i)$ $XeOF_{4}$
$(ii)$ $NeF_{2}$
$(iii)$ $XeF_{2}$
$(iv)$ $XeF_{6}$

(B) $NeF_{2}$ does not exist because neon is a noble gas with a very high ionization enthalpy and small atomic size,making it chemically inert under normal conditions.