Answer:
The phosphate anion (PO4 3-) represents the fully ionized form of phosphoric acid (H3PO4).

Bohr's model is one of the ea.rliest model of atom in history, modified from Ruth.erford's model.
In 1913, a D.anish physi.cts, Niels Bohr refi.ned Ruth.erford model of the atom. How.ever, he disco.vers that elec.tron can only have spe.cific amo.unts of energy. These energy levels are also known as ele.ctron shells.
As for the Lewis Dot Structure, it is the m.odel of an atom that has the che.mical symbol for the ele.ment surronded by dots to rep.resent the valence ele.ctron of the ele.ment.

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The three ways that an atom can fulfill this goal is to give away electrons, take an electron, and share electrons.