and atomic radius. Many scientists worked on the problem of organizing the elements, but Dmitri Mendeleev published his first version of the periodic table in 1869, and is most often credited as its ...

Chemistry has a central role in science ... we are now able to elucidate the precise atomic-level structures of large biomolecules such as DNA, RNA, proteins and polysaccharides.

Bohr's work on atomic structure also laid the foundation for later discoveries in nuclear physics and chemistry, including the development of nuclear energy and the understanding of chemical bonding.