Final answer:
Strontium and phosphorus form an ionic bond resulting in the chemical formula Sr₃P₂ for the compound created.
Step-by-step explanation:
When strontium and phosphorus react with each other to form a compound, they form an ionic bond because strontium is a metal and phosphorus is a nonmetal.
Strontium readily loses two electrons to form Sr²⁺ ions, and phosphorus tends to gain three electrons to form P³⁻ ions. To balance the charges, three strontium ions will react with two phosphorus ions, resulting in the chemical formula Sr₃P₂ for the compound that is created.