& - Pushing Pulling 5.60 2 The picture below shows the death and burial of plants and animals on the ocean floor. In millions of years, this event will most likely lead to the formation of - F sedimentary rocks G metamorphic rocks H fossil fuels J renewable energy sources 5. 7A used by -

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.