Sunday, March 6, 2016

Periodic Trends

Here are the four periodic trends that we learned about last week in class:

Atomic Size: As you move down a group and from right to left on the table, the atoms tend to get larger. This is due to electrons being added to larger orbitals and shielding. Here is a picture that helped me better visualize what the sizes of each elements atoms are:

Source of above picture

Ionization Energy: As you move up a group and from left to right on the table, the ionization energy increases. This means that it needs more energy to remove an electron from a gaseous atom. Here is a website that I found to help explain what ionization energy is: Ionization Energy

Electron Affinity: As you move up a group and from left to right on the table, electron affinity increases. This is the ease with which an electron may be added to an atom, forming an anion. Some electron affinities can even be negative.

Electronegativity: As you move up a group and from left to right on the table, electronegativity increases. This is the tendency of an atom to draw electrons toward itself when chemically combined with another element. Here is a website that helped me to understand what this means: Electronegativity

5 comments:

  1. I like the different definitions you used in this which all tie into this one subject. The picture is also extremely helpful too!

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  2. During the test I had a really hard time with electron affinity but this really helped me out.

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  3. This picture and set of links were super helpful! I feel like the websites you attached gave me a deeper understanding about what each trend is.

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  4. The pictures of the atoms really helped me to understand the difference in atom radius as you go across the periodic table.

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  5. Your explanations were very easy to understand and really helpful, great post!

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