The diagram represents an electrochemical cell at 298K and 1 atmosphere. What is the maximum cell voltage (E) when the switch is closed?
1.
+1.61 V
2.
-1.61 V
3
+3.13 V
4.
-3.13 V

the awnser is group 12

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.