Question

what is the electron dot structure of H3PO4

Answer 1

There are a total of 32 valence electrons for the H3PO4 Lewis structure. When we have an H (or H2 or H3) in front of a polyatomic molecule (like CO3, SO4, NO2, PO4,etc.) we know that it's an acid. This means that the Hydrogen atoms will be attached to the outside of the oxygen molecules