  This article presents the generalization of a zero spin hydrogen atom to a
relativistic atomic model of hydrogen with dyons using the Klein--Gordon
equation. The derivation of the Klein--Gordon equation for the particle of
relative motion is shown. In addition, the analytical solutions of the equation
are calculated in terms of Whittaker functions and Jacobi weighted polynomials.
The discrete spectrum of energy, and the charge density of the orbiting dyon
are presented. For a system of positive magnetic and electric charges in the
nucleus and negative charges for the orbiting particle, and considering the
first allowed values of $N$ and $l$, it was found that the dyon atom acts with
a greater force of interaction between the charges of the nucleus and the
secondary particle compared to the standard atom. It was obtained by comparing
the distance between the nucleus and charge density concentrations from the
dyon atom with the relativistic pionic atom.
