Which compound is most likely a covalent compound? a 4-column table with 3 rows. the first column titled compound has entries a, b, c. the second column titled melting point (degrees c) with entries negative 183, 660, 772. the third column titled boiling point (degrees c) has entries negative 164, 2467, 1600. the fourth column titled conducts electricity has entries no, yes, yes.

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.