Question

when the first periodic table of the elements was published, the elements were arranged by atomic mass. although several elements seemed out of order, later discoveries showed the order to be correct. which event most likely helped the development of the periodic table? scientists changed the atomic masses to better fit the pattern. scientists refused to consider other ways to organize the elements. new technology was developed that modified the masses. new information changed the understanding of the atoms structure

Explanation:

The development of the periodic table was advanced by new information about atomic structure. Early on, elements were arranged by atomic mass with some seeming out - of - order. As understanding of atomic structure improved, it became clear that atomic number (number of protons) was a more fundamental organizing principle. This new information allowed for a more accurate and comprehensive periodic table. Changing atomic masses to fit a pattern is not a scientific approach, refusing to consider other ways would halt progress, and modifying masses alone doesn't address the fundamental organization.

Answer:

New information changed the understanding of the atom's structure.