Students looked at an Elodea sample under a microscope and identified the following structures: nucleus, chloroplasts, and call wall. They concluded that it was an animal cell. Why is their conclusion incorrect?

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.

it's c (engineer's do their work with mechanical stuff not on any living being)