Ionic Compounds and Their Properties

This video tutorial explains how to write the chemical formula for strontium fluoride. It begins by identifying strontium as a metal and fluorine as a non-metal, forming an ionic compound. The video details the charges of strontium (2+) and fluoride (1-) ions and demonstrates how to balance these charges to achieve a net charge of zero. The final formula for strontium fluoride is presented as SrF2.

What type of compound is formed when a metal and a non-metal combine?

• Metallic compound

• Covalent compound

• Molecular compound

• Ionic compound

Which group does strontium belong to in the periodic table?

• Group 4

• Group 1

• Group 3

• Group 2

What is the ionic charge of a fluoride ion?

• 2-

• 1-

• 2+

• 1+

How many fluorine atoms are needed to balance the charge of one strontium ion?

• One

• Two

• Three

• Four

What is the final chemical formula for strontium fluoride?

• Sr2F3

• Sr2F

• SrF2

• SrF

Why is it necessary to balance the charges in an ionic compound?

• To make the compound more reactive

• To achieve a net charge of zero

• To increase the compound's mass

• To change the compound's color