Use the periodic table to select the element that best fits each of the following descriptions. Alkali metal:
O aluminum
calcium
O
lithium
DONE

the answer is d. 74.02

points

explanation:

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.