Ionic and Covalent Bonding Review

Lewis dot diagrams are shown for lithium (Li) and chlorine (Cl) in the attached photo. If these atoms form a bond, what will happen to their electrons?

• Lithium will gain one electron and chlorine will lose one electron.

• Lithium will lose one electron and chlorine will gain one electron.

• Lithium will gain seven electrons and chlorine will lose one electron.

• Instead of transferring their electrons, lithium and chlorine will share their electrons so that both atoms may obtain a full valence shell.

Each element wants to gain or lose electrons so that it can have the same electron configuration as......

• a Nobel gas
• other elements in its family
• other elements in its period
• it used to have before reacting

Which is the correct Lewis dot structure for the molecule fluorine, F₂?

• A

• B

• C

• D

Which type of bond is formed by the sharing of electrons?

• Ionic

• Covalent

• Metallic

Hydrogen needs _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

Metals form __________, while nonmetals form __________.

• Anions, cations

• Cations, anions

Which type of bond is present in the molecule LiBr?

• Ionic

• Covalent

• Metallic

How many electrons should argon have around its Lewis dot model?

• 5

• 6

• 7

• 8

How are ionic bonds formed?

• transfer of electrons

• sharing of electrons

Lewis dot diagrams for sodium (Na) and chlorine (Cl) are shown in the attached diagram. Which of the following best describes what will happen with these two elements forming a bond?

• Sodium and chlorine will share their valence electrons

• Sodium gains seven electrons and chlorine will gain one electron

• Sodium will lose one electron and chlorine will gain one electron

• Sodium will gain seven electrons and chlorine will lose one electron