Question

a chemical compound in your toothpaste helps protect your teeth from decay. the formula for this compound is na₂po₃f. use the periodic table in your book to identify each element in this compound.

Explanation:

Step1: Identify sodium (Na)

Sodium is an alkali - metal. Its atomic number is 11.

Step2: Identify phosphorus (P)

Phosphorus is a non - metal. Its atomic number is 15.

Step3: Identify oxygen (O)

Oxygen is a non - metal. Its atomic number is 8.

Step4: Identify fluorine (F)

Fluorine is a non - metal. Its atomic number is 9.

Answer:

The elements in the compound $\text{Na}_{2}\text{PO}_{3}\text{F}$ are sodium (Na), phosphorus (P), oxygen (O), and fluorine (F).