What part of an atom bonds with other atoms? a. any electrons b. the outermost protons c. valence electrons d. the innermost electrons

I would be c. valence electrons. This is because all atoms want to be chemically stable so elements that have 8 valence electrons are chemically stable like neon or any of the noble gases.

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.