The paper reviews the current understanding of the solar chemical composition, focusing on recent significant revisions in solar abundances due to the application of 3D hydrodynamical models of the solar atmosphere. These models have reduced the metal content in the solar convection zone by nearly half compared to the widely used 1D hydrostatic models by Anders and Grevesse (1989). The new 3D-based element abundances have resolved several long-standing problems but also pose challenges, particularly for helioseismology. The authors discuss the advantages and disadvantages of different modeling approaches, including 1D and 3D models, and emphasize the importance of accurate atomic and molecular data. They present detailed analyses of various elements, such as lithium, beryllium, boron, carbon, nitrogen, oxygen, neon, argon, sodium, calcium, and others, highlighting the improvements and discrepancies in their abundances. The paper concludes by noting the need for further refinement and extending the 3D analysis to more elements, as well as the importance of improving atomic and molecular data.The paper reviews the current understanding of the solar chemical composition, focusing on recent significant revisions in solar abundances due to the application of 3D hydrodynamical models of the solar atmosphere. These models have reduced the metal content in the solar convection zone by nearly half compared to the widely used 1D hydrostatic models by Anders and Grevesse (1989). The new 3D-based element abundances have resolved several long-standing problems but also pose challenges, particularly for helioseismology. The authors discuss the advantages and disadvantages of different modeling approaches, including 1D and 3D models, and emphasize the importance of accurate atomic and molecular data. They present detailed analyses of various elements, such as lithium, beryllium, boron, carbon, nitrogen, oxygen, neon, argon, sodium, calcium, and others, highlighting the improvements and discrepancies in their abundances. The paper concludes by noting the need for further refinement and extending the 3D analysis to more elements, as well as the importance of improving atomic and molecular data.