Ion Charges and Electron Configuration

The video tutorial explains how to determine the charges of ions by examining examples of sodium, chlorine, calcium, oxygen, sulfur, and magnesium. It discusses the electron configurations and how ions form by gaining or losing electrons to achieve stability. The tutorial also outlines general rules for predicting ion charges based on the periodic table, emphasizing the difference between metals and non-metals.

What is the primary focus when determining the charges of ions?

• The color of the element

• The physical state of the element

• The atomic mass

• The position on the periodic table

How many electrons does sodium lose to form a stable ion?

• Two

• Three

• One

• Four

What is the charge of a sodium ion after it loses an electron?

• -1

• +1

• 0

• +2

What is the electron configuration of chlorine before it forms an ion?

• 2.8.5

• 2.8.6

• 2.8.8

• 2.8.7

How does calcium achieve a stable electron configuration?

• By losing two electrons

• By gaining one electron

• By losing one electron

• By gaining two electrons

What is the charge of an oxide ion?

• -1

• +1

• +2

• -2

How many electrons does oxygen gain to form an ion?

• One

• Four

• Two

• Three

What is the charge of a sulfide ion?

• -1

• +1

• +2

• -2

How does magnesium achieve a stable electron configuration?

• By gaining one electron

• By losing one electron

• By losing two electrons

• By gaining two electrons

What is the general rule for determining the charge of a metal ion?

• Group number minus 8

• Group number plus 1

• Group number

• Group number minus 1