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So, today we're going to look at the periodic table. That thing that you see behind ... Now that does make a bit more sense. For example, lithium (Li), sodium (Na) and potassium (K) all have ...
So, today we're going to look at the periodic table. That thing that you see behind ... Now that does make a bit more sense. For example, lithium (Li), sodium (Na) and potassium (K) all have ...
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