Phosphate Ion and Strontium Compounds

The video tutorial explains how to name the compound Sr3(PO4)2, known as strontium phosphate. It begins by identifying strontium as a metal in group two and PO4 as a polyatomic ion, specifically the phosphate ion. The tutorial then details how to balance the ionic charges: strontium has a 2+ charge, and the phosphate ion has a 3- charge. To balance these charges, two phosphate ions and three strontium ions are needed, resulting in the formula Sr3(PO4)2. The video concludes with a summary of the naming process.

What is the group number of strontium in the periodic table?

• Group 4

• Group 3

• Group 2

• Group 1

What type of ion is PO4?

• Polyatomic ion

• Diatomic ion

• Triatomic ion

• Monatomic ion

What is the ionic charge of strontium?

• 1+

• 4+

• 2+

• 3+

What is the charge of the phosphate ion?

• 2-

• 3-

• 4-

• 1-

How many phosphate ions are needed to balance the charge with three strontium ions?

• Three

• Four

• Two

• One

What is the final formula for strontium phosphate?

• Sr(PO4)2

• Sr2(PO4)3

• Sr3(PO4)2

• Sr3(PO4)3