Topics 3 & 13 : Periodicity

IB Chemistry: Topics 3 & 13 : Periodicity

It seems to me that the periodic table is almost the perfect example of human ingenuity in Chemistry. What is amazing is that 150 years since the periodic table was first proposed by Mendeleev in 1869 there is still not the Periodic Table. If you search in books and on the Internet you will find that there are many different periodic tables. These range from short to long forms, some with eight groups and others with...

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