Statement 1 : The H3O+ has additional water molecules closely associated with it.Statement 2 : In solid state the species H5O2+ and H9O4+ have been found to exist.

Hydrogen ion is a proton (H+), binds it self with the water molecules to form H3O+. Which has been detected in many compounds in the solid state. In aqueous solution the hydronium ion is further hydrated to give species like H5O2+ , H7O3+ , H9O4+.