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Unformatted text preview: 12. Rank the following in terms of increasing ionization energy. a) H, He, Li Li, H, He b) Ne, O, C, N C, O, N, He Note the exception to the trend. Generally, for this exception in IE, the difference is enough so that the elements IE (O this time) is lower than the IE of the element to its left (N), BUT not so low that it would be even lower than the one two to its left (C). c) Mg, Ba, Se, As Ba, Mg, Se, As Yes, Se and As are lower on the periodic table than Ba and Mg, but you can still predict this order based on general trends. You should take a look at the charts showing atomic radii, IE, etc. in your book. Take a look at the trends and you will see that normally the left-to-right trend is more important than the top-to-bottom trend. Get a feel for that general idea by looking at how much values vary as you go up a column vs how much they vary...
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This note was uploaded on 09/19/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.
- Fall '07