1 / 17

Chapter 15 Ionic Bonding and Ionic Compounds DIRECTIONS: COPY ONLY THE UNDERLINED INFO!

Chapter 15 Ionic Bonding and Ionic Compounds DIRECTIONS: COPY ONLY THE UNDERLINED INFO!. What is an Ionic Bond?. Ionic Bond. Bond formed between a metal and nonmetal. Why do atoms bond?. Atoms bond in order to acquire a full set of valence electrons.

robertgraham
Download Presentation

Chapter 15 Ionic Bonding and Ionic Compounds DIRECTIONS: COPY ONLY THE UNDERLINED INFO!

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. Chapter 15Ionic Bonding and Ionic CompoundsDIRECTIONS: COPY ONLY THE UNDERLINED INFO!

  2. What is an Ionic Bond?

  3. Ionic Bond Bond formed between a metal and nonmetal.

  4. Why do atoms bond? • Atoms bond in order to acquire a full set of valence electrons. • Most of the time this is 8 . This is known as the octet rule. • Atoms will gain, lose or share in order to attain a full set of electrons

  5. Valence Electrons • The electrons responsible for the chemical properties of atoms are those in the outer energy level. These electrons are called the valence electrons. • Valence electrons - The electrons in the outer energy level

  6. Electron Configuration

  7. Keeping Track of Electrons • Atoms in the same column... • Have the same valence electrons. • LABEL! 

  8. Electron Dot diagrams • A way of keeping track of valence electrons. • How to write them? • Write the symbol. • Put one dot for each valence electron • Don’t pair up until they have to (Hund’s rule) X

  9. The Electron Dot diagram for Nitrogen • Nitrogen has 5 valence electrons. • First we write the symbol. N • Then add 1 electron at a time to each side. • Until they are forced to pair up.

  10. Write electron dot diagrams: • Na • Mg • C • O

  11. Electron Configurations for Cations • Metals lose electrons to attain noble gas configuration. • They make positive ions (cations) • If we look at the electron configuration, it makes sense to lose electrons: • Na 1s22s22p63s1 1 valence electron • Na1+1s22s22p6 noble gas configuration

  12. Electron Configurations for Anions • Nonmetals lose electrons to attain noble gas configuration. • They make negative ions (anions) • If we look at the electron configuration, it makes sense to lose electrons: • F 1s22s22p5 2 valence electrons • F-1 1s22s22p6 noble gas configuration

  13. Properties of Ionic Compounds • A regular repeating arrangement of ions in the solid: this is known as a lattice. Structure is rigid. • High melting points

  14. Crystalline structure

  15. Do they Conduct? • Conducting electricity is allowing charges to move. • In a solid, the ions are locked in place. • Ionic solids are insulators. • When melted, the ions can move around. Therefore, they have the ability to conduct electricity • Ionic Compounds dissolved in water conduct

  16. Completing the Circuit

More Related