Calculate the number of grams of NH3 produced by the reaction of 6.82 grams of nitrogen with hydrogen. The chemical equation for this reaction is:
N2 + 3 H2 - 2 NH3

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.