The periodic table has changed very little since it was originally developed by Mendeleev and Meyer is referred to as a false statement.
This is defined as the arrangement of elements based on their atomic number in a tabular form. It consists of 18 vertical columns which re referred to as groups and seven horizontal rows called period.
Henry Moseley in 1913 organized Mendeleev's periodic table based on physical properties.This took into consideration their atomic number rather than atomic mass and other missing elements.
This is the periodic table which is used currently and therefore hasn't changed much which is why false was chosen.
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