The authors have calculated the energy profiles of a hydrogen atom located at different positions on the (110)-plane in GaP by employing the CNDO method. The actual global minimum is found when the hydrogen atom lies at a site at a distance 1.44 AA away from the nearest P atom along the (001)-axis on the (110)- plane. This distance is very close to the P-H bondlengths of 1.43 and 1.42 AA in the PH and PH₃ molecules respectively.