In sp,sp2 and sp3 hybrid orbitals, the s-orbital character is 50%,33.3% and 25%, respectively, and because of the higher s-orbital character, electronegativity, increases. Related Theory The electrons of sp3 hybridized atom are farther from the nucleus than those in sp2 hybridized species. Therefore, sp2 hybrid species are more stable than sp3 hybrid species. This is because the stability is greater when the electrons are close to the nucleus.