Is CaCO3 (Calcium carbonate) Ionic or Covalent?

Wayne Breslyn
Wayne Breslyn
36.3 هزار بار بازدید - 4 سال پیش - To tell if CaCO3 (Calcium
To tell if CaCO3 (Calcium carbonate) is ionic or covalent (also called molecular) we look at the Periodic Table that and see that Ca is a metal and CO3 is a group of non-metals. Here the group of nonmetals make up a polyatomic ion. When we have a metal and a group of non-metals the compound is usually considered ionic.

Because we have a metal and non-metals in CaCO3 there will be a difference in electronegativity between the metal and group of nonmetals. This difference results in an electron(s) being transferred from the metal (lower electronegativity) to the non-metal (higher electronegativity). The results in the metal becoming a positive ion and the group of non-metals a negative polyatomic ion. The two opposite charges are attracted and form the ionic bond between ions in Calcium carbonate.
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Helpful Resources

Metals, Non-Metals on the P- Table: Metals, Nonmetals, and Metalloids on ...
Ionic, Covalent, & Polar Covalent: Polar, Non-Polar, and Ionic Compounds...
Electronegativity for each element: https://en.wikipedia.org/wiki/Electro...
Memorizing Polyatomic Ions: Memorizing and Using the List of Poly...
Finding Ionic Charge: Figuring out the Charge on Ions
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Because we have a combination of a metal and non-metal CaCO3 (Calcium carbonate) is considered an ionic compound.

In general, ionic compounds:

- form crystals.
- have high melting points and boiling points.
- are hard and brittle.
- conduct electricity when dissolved in water.
- as solids do not conduct electricity.


For more chemistry help, see http://www.Breslyn.org.
4 سال پیش در تاریخ 1399/01/27 منتشر شده است.
36,309 بـار بازدید شده
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