Which of the following pairs of aqueous solutions will form a precipitate when mixed? NaCl + Li3PO4 AgC2H3O2 + Cu(NO3)2
NH4NO3 + Na2CO3
Hg2(NO3)2 + LiCl
None of the above solution pairs will produce a precipitate.

5.6⋅10−^19  j

do you need the explaination?

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.