The effects of the two-body short range correlation (SRC) and the occupation probability (η) of higher states on the elastic electron scattering longitudinal form factors F(q) are investigated. Considering the effect of higher occupation probabilities and the effect of SRCs is important in getting a good agreement between the calculated elastic longitudinal electron scattering F(q)s and those of the experimental data for 4He, 12C, 16O, 28Si, 32S, and 40Ca nuclei.