Ions and Their Properties

The video tutorial by Mr. Knight covers the formation of monoatomic ions, focusing on how atoms become ions by losing or gaining valence electrons. It explains the difference between cations and anions, using examples like sodium, oxygen, aluminum, and chlorine. The tutorial also discusses how the periodic table helps predict ion formation and concludes with a summary of key points.

What is the charge of an atom when the number of protons equals the number of electrons?

• Variable

• Neutral

• Negative

• Positive

How are ions formed?

• By changing the number of protons

• By changing the number of neutrons

• By losing or gaining valence electrons

• By splitting the atom

What type of ion does a metal typically form?

• Anion

• Cation

• Neutral ion

• Variable ion

What is the electron configuration of a sodium ion?

• 2, 7

• 2, 8, 2

• 2, 8

• 2, 8, 1

How many electrons does oxygen gain to form an ion?

• One

• Two

• Four

• Three

What is the charge of an aluminum ion after losing three electrons?

• 3+

• 1+

• 2+

• 4+

What is the electron configuration of a chlorine ion?

• 2, 8, 6

• 2, 7, 8

• 2, 8, 7

• 2, 8, 8

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

• Group 1

• Group 2

• Group 4

• Group 3

How many electrons does a group 6 element gain to form an ion?

• One

• Two

• Three

• Four

What is the charge of ions formed by group 7 elements?

• 2-

• 1-

• 2+

• 1+