The final lesson before our big unit test concerned me a bit at first. Throughout the lecture I thought that this lesson was very hard. After reviewing it over, I realized there was only one huge key concept that you needed to remember. That was this magical little picture / graph showing the periodic trends and which way they increased based on the periodic table. It had them all: ionization energy, electron affinity, metallic characteristics, and the atomic radius. All of these trends were very important, but you really only needed to know which elements would be more or less compared to each other based on the direction of those trends.
Fantastic Source To Better Understand Periodic Trends
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| http://upload.wikimedia.org/wikipedia/commons/4/41/PERIODIC_TRENDS.jpg |
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