The KLOE collaboration has recently published new results concerning scalar and pseudoscalar mesons. Here the φ → a₀(980)γ → ηπ⁰γ decay analysis and the search for the φ → K⁰K̅⁰γ decay are discussed, together with the η → π⁺π⁻e⁺e⁻ decay measurements annd the new results for the pseudoscalar mixing angle and gluonium content of the η' meson.