The way in which one atom interacts with another atom is mostly influenced by the configuration of the A.
protons on the outer edge of the nucleus.
B.
protons in the center of the nucleus.
C.
electrons closest to the nucleus.
D.
electrons farthest from the nucleus.

answer seismograph;

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.  

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