Ionic Compounds and Their Properties

The video tutorial explains the ionic nature of magnesium chloride (MgCl2), detailing the charges of magnesium and chlorine ions. It covers the calculation of net charge in ionic compounds, ensuring it sums to zero. The tutorial also describes the dissociation of MgCl2 in water, resulting in one magnesium ion and two chloride ions, making a total of three ions. The video concludes with a summary of these concepts.

What type of compound is MgCl2?

• Molecular compound

• Metallic compound

• Ionic compound

• Covalent compound

What is the ionic charge of magnesium in MgCl2?

• 1-

• 1+

• 2-

• 2+

Which group in the periodic table does chlorine belong to?

• Group 2

• Group 1

• Group 18

• Group 17

How do the charges of magnesium and chlorine ions in MgCl2 add up?

• They add up to 0

• They add up to 1+

• They add up to 2+

• They add up to 1-

What happens to MgCl2 when it is dissolved in water?

• It evaporates

• It dissociates into ions

• It remains unchanged

• It forms a precipitate

How many ions are formed when MgCl2 dissociates in water?

• Two ions

• Three ions

• Four ions

• Five ions