1 / 7

Predicting Bond Type Using Eneg Values

Learn how to predict bond type using electronegativity values and identify diatomic elements. Understand pure vs. polar covalent bonds and practice predicting bond types.

haroldjwilliams
Download Presentation

Predicting Bond Type Using Eneg Values

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. Predicting Bond Type Using Eneg Values LecturePLUS Timberlake

  2. I CAN predict a bond type using Eneg values and identify diatomic elements. LecturePLUS Timberlake

  3. Diatomic Elements • Some elements, when not bonded to other elements, bond to another atom of their own kind. These are known as DIATOMIC ELEMENTS. • There are 8 naturally existing diatomic elements: • ALL of family 17 (Halogen Family). • Oxygen, Nitrogen and Hydrogen • These elements should be written as: • F2, Cl2, Br2, I2, At2, O2, H2, N2 when they are NOT part of a compound.

  4. Pure vs Polar Covalent • When two atoms share an electron, the ELECTRONEGATIVITY value of each atom determines how closely the electron is pulled toward one atom or the other. • Recall Electronegativity [Eneg] is the measure of the attraction one atom has for another’s valence electrons. • SEE CHART NEXT SLIDE FOR Eneg Values. LecturePLUS Timberlake

  5. Electronegativity Values LecturePLUS Timberlake

  6. Determining Bond Type • To determine the type bond between any two atoms, find the difference between their Eneg values: 0 to 0.5 PURE Covalent – the e- is shared at an equal distance between both atoms. 0.51 to 1.99 POLAR Covalent – the e- is shared closer to one atom than the other…this gives the atom the e- is closest to a slightly NEGATIVE charge [delta -] and the one the e- is father away from a slightly POSITIVE charge [delta +]. 2.0 or greater  the e- is completely transferred from one atom to the other and forms an IONIC BOND. LecturePLUS Timberlake

  7. Practice Problems • Use Eneg values to predict the type of bond that would form between each pair of atoms: 1. Ca and Br ____________ 2. H and O ______________ 3. Pb and S ______________ 4. Au and S_______________ 5. Sn and I ______________ 6. C and H _______________ 7. B and H _______________ 8. Fr and F _______________9. N and Al _______________ 10. Sb and Cl ______________ LecturePLUS Timberlake

More Related