PLEASE HELP !!! especially on C and D!!
Please use the periodic table located below to help you formulate your answers. On the table, locate the elements barium, phosphorus, and oxygen and then answer the questions below.
A) List the number of valence electrons each element has and explain how you know.
B) Based on the number of valence electrons, write the monatomic ion (symbol with the charge) each element may form.
C) The monatomic ion of phosphorus is P3-, for barium, its Ba2+ and oxygen is O2-.
Phosphorus and oxygen can bond to form a polyatomic ion. Write the formula for this ion and be sure to include the ion charge.
D) Using the monatomic ions you listed above in (b), the polyatomic ion from (c), write the formulas for the three ionic compounds these ions could form.