1 / 10

Electronegativity, Yo !

Electronegativity, Yo !. Niquisha , RayDizzle , Ashwayze. Definition:. A measure of the ability of an atom in a molecule to attract electrons to itself. Trends:. Electronegativity decreases down a column.

thanos
Télécharger la présentation

Electronegativity, Yo !

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. Electronegativity, Yo! Niquisha, RayDizzle, Ashwayze

  2. Definition: • A measure of the ability of an atom in a molecule to attract electrons to itself.

  3. Trends: • Electronegativity decreases down a column. • The inner core electrons shield the positive charge of the nucleus from the outer electrons. • So as the orbital size increases, it is more difficult for the protons of the atom to attract electrons.

  4. Trends: • Electronegativity increases across a row from left to right. • As you move across a period, the nucleus gains protons and is therefore more attractive to electrons. • http://en.wikipedia.org/wiki/Electronegativity

  5. Highest • Fluorine • Needs one more electron, so has a higher tendency to form a negative ion.

  6. Lowest • Francium • Easier to lose an electron than gain seven to become stable .

  7. Units: • Nope.

  8. Exceptions (Down a Column): • Generally, the shielding effect of the d group isn’t as strong because the new electrons are put INSIDE, not added to the outer oribital. This means that as the atomic number increases, the atomic radius doesn’t. • Instead of decreasing down a column, most of the transition metal electronegativity values increase.

  9. Exceptions (Across a Period): • In the transition metals, some elements do not follow the trend of increasing from left to right. • Mo = 2.2, but Tc = 1.9.

  10. Exceptions: • Noble Gases…duh. • They’re already stable and have full orbitals. Their tendency to attract electrons is minimal to nonexistent.

More Related