Electronegativity
Download
1 / 9

Electronegativity - PowerPoint PPT Presentation


  • 207 Views
  • Uploaded on

Electronegativity. Anish Tailor, Jimmy Tang, Costco Bovalis, Jinwoo Oak, Brian Jestice . What is Electronegativity?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Electronegativity' - macon


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Electronegativity

Electronegativity

Anish Tailor, Jimmy Tang, Costco Bovalis, Jinwoo Oak, Brian Jestice


What is electronegativity
What is Electronegativity?

Electronegativity is the measure of attraction between the nucleus and shared electrons of an atom. The more electronegative an atom is, the stronger the attraction between electrons. Electronegativity is measured on a scale from 0 to 4 with 4 being high electronegativity.


This chart is super helpful
This chart is super helpful.

High Electronegativity

Low Electronegativity


Trend in a row
Trend in a row

Moving across a row increases electronegativity.


Ap explanation
AP Explanation

Electronegativity is the tendency of an atom to attract electrons towards itself. Higher atomic number results in more protons in the nucleus, and thus a stronger positive electric charge to attract electrons. In addition, the atom size shrinks from the left to the right of a period.


Trend in a column
Trend in a column

  • Moving down a column decreases electronegativity. Until Cr.

  • Moving from left to right electronegativity increases.


Ap explanation1
AP Explanation

Increased shielding from an increasing number of electron shells discourages external electrons from being attracted to the atom. Consider Fluorine and Chlorine. Fluorine has only the 1s2 electron shells shielding electrons from the nucleus while Chlorine has 1s2 2s2 2p6 electron shells to shield electrons from the nucleus. Like charges repel, so there is less electronegativity in Chlorine. In each case the pull of the nucleus is +7. However, as we see in the equation F = kqq/r^2, the smaller radius in the Fluorine atom due to less electron shells results in a greater net force.


Units
Units

Electronegativity does not have any units, rather, it measured with the Pauling scale. Like the PH scale, the Pauling scale gives a dimensionless quantity ranging from 0.7 to 3.98.

Troll Units.


Exceptions and explanations
Exceptions and Explanations

Although electronegativity increases from left to right, the noble gases are not included because noble gases don't usually bond, though under high pressures Xe and Kr can bond with F.