Answers

2015-07-29T18:14:20+08:00
Just practice it try and try until you suceed

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Take a look of this maybe you'll memorize the periodic table fast (its a song) http://www.youtube.com/watch?v=zUDDiWtFtEM
2015-08-01T14:51:08+08:00
And be familiar to what groups or periods does the elements belong. Try it, familiarizing it is much easier than memorizing the groups and periods. Also you can do excercises to familiarize it faster.
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