Chemical Bonding and Molecular Structure: JEE Main 2025 Chemistry question

The number of molecules/ions that show linear geometry among the following is ______. $\mathrm{SO_2}$, $\mathrm{BeCl_2}$, $\mathrm{CO_2}$, $\mathrm{N_3^-}$, $\mathrm{NO_2}$, $\mathrm{F_2O}$, $\mathrm{XeF_2}$, $\mathrm{NO_2^+}$, $\mathrm{I_3^-}$, $\mathrm{O_3}$