Ionic Charges and Electron Configuration

The video explains how ions form from atoms by gaining or losing electrons to achieve a full outer shell. It uses examples of magnesium, sulfur, and sodium to illustrate the process. Magnesium loses two electrons to form a 2+ ion, sulfur gains two electrons to form a 2- ion, and sodium loses one electron to form a 1+ ion. The video also discusses periodic table trends, showing how elements in different groups form ions. Mnemonics are provided to help remember the concepts.

What is the primary goal of an atom in terms of its electron configuration?

• To lose all its electrons

• To have an equal number of protons and neutrons

• To achieve a full outer shell of electrons

• To have more protons than electrons

How many electrons does magnesium lose to form an ion?

• Three

• One

• Two

• Four

What is the charge of a magnesium ion after it loses electrons?

• -2

• -1

• +2

• +1

How does sulfur achieve a full outer shell?

• By losing two electrons

• By losing six electrons

• By gaining six electrons

• By gaining two electrons

What is the charge of a sulfur ion after it gains electrons?

• +1

• +2

• -1

• -2

How many electrons does sodium lose to form an ion?

• One

• Two

• Three

• Four

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

• +1

• +2

• -2

• -1

Which group in the periodic table typically forms ions with a +1 charge?

• Group 1

• Group 7

• Group 2

• Group 6

What type of ion is formed when an atom gains electrons?

• Cation

• Anion

• Proton

• Neutron

What is the term for a positively charged ion?

• Neutron

• Cation

• Electron

• Anion