Can an ionic bond exist in a molecular formula?

yes

Explanation:

bark bark bark bark bark bark bork bork bork

- decrease the number of plants and animals living in the water.

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.