2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192119The electromagnetic form factor for the $K^0$ is calculated in a covariant formulation of the Salpeter equation for $q\bar q$ - bound states, which has been presented recently for the mass spectrum, decay properties and form factors of the light pseudoscalar and vector mesons. The $K^0$ charge radius dependence on the difference between strange and down constituent quark mass is discussed.5 pages including 3 uuencoded figures, RevTeXHigh Energy Physics - Phenomenologytext