1 / 20

Ionic Bonding (Brief version)

Learn about ionic bonding where electrons are transferred from one atom to another, creating ions with opposite charges. Understand how to write chemical formulas using the criss-cross rule and deal with polyatomic ions.

willsl
Download Presentation

Ionic Bonding (Brief version)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ionic Bonding (Brief version)

  2. Ionic Bonding • Two ions with opposite charges (+ and -) are attracted to each other • An ionic bond is a chemical bond formed when atoms transfer electrons from one to another • Metal + Non-Metal • The positive ion is the one that donates the electron(s). The negative ion gains the electron(s)

  3. O 2 Subscripts • Written to the bottom right of an element to indicate the number of atoms of that element that it has. • If no number is written, we assume that there is one atom.

  4. Subscripts • Go only with the element it is beside unless there are parentheses. • If there are parentheses, distribute the number outside the parentheses to everything inside the parentheses. • Only use parentheses with polyatomic ions

  5. SO B 2 4 C O 3 2 Subscripts 2 Boron 1 Carbon 3 Sulfur 2 Oxygen 12 Oxygen

  6. Ca Cl Criss-Cross Rule To write the chemical formula for an ionic compound, write down the metal first and the non-metal second

  7. Ca Cl Criss-Cross Rule • Next, find the oxidation numbers for both compounds involved. Write the oxidation numbers next to the two elements 2+ 1-

  8. 2+ 1- Ca Cl Cl Ca 2 Criss-Cross Rule • Cross the number from the superscript of one element to become the subscript of the other element.

  9. Example Al O

  10. -2 +3 Example Al O

  11. Example -2 Al O 3

  12. Example Al O 3 2

  13. Example Al O 3 2

  14. Ionic Bonding with Polyatomic Ions • When creating ionic compounds with polyatomic ions, pretend that the polyatomic ion is a regular ion. • If there is more than one set of a polyatomic ion, use parentheses when writing the formula

  15. -3 SO 4 Example Mg

  16. -3 SO 4 Example +2 Mg

  17. Example -3 SO Mg 4 2

  18. Example SO Mg 4 3 2

  19. Example Mg SO 4 3 2

More Related