does anyone know how to use electronegativity values and Lewis diagrams to predict the type of bond when two atoms react?

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

Describe the properties of sodium, chlorine, and sodium chloride