Ionic and Covalent Bonds Quiz

Which of the following best explains the octet rule?

• Atoms share electrons to form stable configurations.

• Atoms gain, lose, or share electrons to achieve a full outermost shell.

• The atom must contain eight protons.

• Ionic compounds contain eight atoms.

Which of the following elements would most likely follow the octet rule?

• Helium

• Neon

• Sulfur

• Argon

Which of the following is the correct Lewis dot symbol for fluorine?

• F ••

• • F ••

• •F••••

• F••

Draw the Lewis dot symbol for the calcium ion.

• Ca+2 with no dots around it

• Ca+2 with two dots around it

• Ca with eight dots

• Ca with six dots

Which of these elements is most likely to form a cation?

• Oxygen

• Chlorine

• Sodium

• Sulfur

What is the charge of an ion formed when magnesium loses two electrons?

• -2

• -1

• +1

• +2

Ionic bonds form when:

• Two nonmetals share electrons.

• A metal donates electrons to a nonmetal.

• A nonmetal gains electrons from another nonmetal.

• Two metals share a pool of electrons.

Which of the following compounds is ionic?

• CO₂

• NaCl

• H₂O

• CH₄

Covalent bonds are formed by:

• Transferring electrons

• Sharing electrons

• Losing electrons

• Gaining electrons

Which of the following is a covalent compound?

• MgCl₂

• H₂O

• NaBr

• K₂O