NEED HELP ASAP 20 POINTSIn a chemical reaction, the_ are the substances that enter into the reaction. The are the substances that are made in the reaction. ​

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.

the volume increases