Part $3$Procedure for Writing Chemical Formulas for Compounds

Step $1.$ Turn Parent atoms into ions

Step $2$ Add charges

Step $3$ If charges $=0$ then write chemical formula for compound $$

Step $4$ If charges do not $=0$ then add subscript

Step $5-$ Multiply subscript times superscript to find total charge

Step $6$ When total charge $=0$ write chemical formula for compound

Part $4$ Writing chemical formulas for compounds Please follow these steps for these $6$ compound problems and write chemical formulas with all $6$ steps for each, will give thumbs up if did a good job: $1.$ Aluminum and Phosphorus, $2.$ Calcium and Iodine, $3.$ Barium and Sulfur, $4.$ Gallium and Bromine, $5.$ Lithium and Nitrogen, and lastly $6.$ Aluminum and Oxygen. Thank you.