In this work, the structure of \(^{20}\) Ne nucleus is investigated. We calculated excitation energies, charge and matter density distributions, root mean square radii, reduced transition probabilities, magnetic dipole moments, electric quadrupole moments, and elastic and inelastic longitudinal form factors for the ground and some low-lying positive-parity excited states. The calculations were carried out using the extended model spaces: spsdpf (no-core) with WBT interaction, psd ( \(^{4}\) He core) with PSDMWK interaction, zbm ( \(^{12}\) C core) with ZBMI interaction, and sd ( \(^{16}\) O core) with USDA interaction. For each calculation, the Harmonic Oscillator (HO), Woods–Saxon (WS), and Skyrme potentials with parameterizations SkXcsb, SLy4, SkXta, and SkXtb were employed. The Skyrme–Hartree–Fock (SHF) approach and shell model were used as the theoretical framework, and the core-polarization effect was treated using the Tassie model. The results were compared with the available experimental data, and good agreement was achieved.