Question

60. Which of the following compounds would you expect to be ionic?

a. CO2
c. CaO
b. SF6
d. NH3

Answer 1

CaO

Step-by-step explanation:

• An ionic compound is formed from a metallic atom and non-metallic atom.
• Ionic compound results from an ionic bond between a non-metal atom and a metal atom.
• Ionic bond occurs when a metallic atom loses an electron(s) to form a cation and a non-metallic atom gains electron(s) to form an anion.
• The electrostatic attraction between the negatively charged ion and the positively charged ion creates an ionic bond, thus, resulting in the formation of an ionic compound.
• In this case, calcium oxide is an example of an ionic compound.
• Calcium atom loses two electrons to form positively charged calcium ion while the oxygen atom gains two electrons to form a negatively charged oxygen ion.
• Calcium ion and oxygen ion form an ionic bond thus resulting in the formation of an ionic compound.