Chemistry 11 - Scientists' Contributions to the Periodic Table

Antoine Lavoisier

Created the initial list of elements

William Odling

Found elements could be divided into 13 groups based on chemical and physical properties

John Newlands

Elements had recurring properties every eighth element when organized by atomic number

Dmitri Mendeleev

Organized elements into a table based on increasing atomic mass and similar properties

Henry Moseley

Found that arranging elements by atomic number instead of atomic mass created a clearer pattern. This led to the periodic law, stating element properties repeat periodically when arranged by increasing atomic number.