Anyone on discord???if yes then plz do mention ur discord username and number tag. My discord username :- Theweirdo#9686

Ido not understand. 

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.