Polarity of OsO4

As shown in this picture, the Oxygen atoms have a slightly more negative charge. This is because Oxygen atoms have an electronegativity of 3.5 while Osmium is only 2.2. Due to the tetrahedron structure of Osmium tetroxide, this molecule is nonpolar because no side is slightly more negative than any other.

Due to the nonpolarity of Osmium tetroxide, the only forces acting upon it between other molecules are London dispersion forces.

London dispersion forces are there temporary attraction between nonpolar molecules when the constantly moving electrons cause the molecules to become instantaneously polar. When this occurs, a temporary dipole is formed which can attract other temporary dipoles.

2 comments:

  1. Jon-

    The overall appearance of the blog is very well laid out and presents the information in an organized, concise manner. The color scheme is rather dark, but it does have a certain, awe-inspiring quality when compared to the toxicity and danger of this molecule. Your picture correctly shows the electronegativity arrows and the proper molecular angles. You correctly states the molecule's form and polarity (Tetrahedron and Non-Polar). Since the molecule is non-polar, you correctly stated that only London Dispersion Forces are acting upon it. Your ad is well-done. It presents information about the molecule's uses very well, but seems to be lacking in its persuasiveness. However, this is most probably due to the fact that since the molecule osmium tetroxide is so dangerous, it is only used in very controlled situations, far from what the average person might experience.

    -Sam

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  2. The over all appearance was very interesting. While the color scheme was very nice it was very dark which made it difficult for me to read the white lettering at times. The molecule picture was very nice but I wish there were more of them on the blog, it would have been very nice to see a different picture with each description. The polarity of the molecule and it's bonds was correct and the intermolecular forces were also correct. I enjoyed the ad because it did not only give the uses of the molecule but also the facts about how the molecule can be dangerous.

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