In the reaction 3H2 + N2 -> 2NH3, how many moles of NH3 will be produced if 4.72 g of H2 react with excess N2?

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

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.