Periodic Table and Chemical Bonding. 1 The discovery of a large number of elements and the study of their properties revealed between some certain similarities. This prompted chemists to search for a classification of the elements not only to facilitate their knowledge and description, but more importantly, for research leading to new advances in our understanding of matter. Mendelejeff early work dating from 1860 and 1869 findings were.

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Useful IB and IGCSE chemistry websites. Chemistry and science in the news. Watch this video clip about a yellow diamond and other coloured diamonds. Help on how to format text.

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