An aqueous solution of a vanadium chloride salt is electrolyzed by a current of 3.00 A passing for 60.0 min. If 2.90 g of vanadium is produced at the cathode during this time, what is the likely formula unit for the vanadium salt? Group of answer choices VCl VCl2 VCl3 VCl4 VCl5

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.