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: Many people had attempted to arrange the [[element]]s into a table before [[Mendeleev]] but [[Mendeleev]] was the first to combine [[Chemical Property|chemical properties]] and [[Relative Atomic Mass|atomic mass]] into one table.
: The modern [[Periodic Table]] is based on [[Mendeleev]]'s with one modification. It is based on the [[Atomic Number]] and [[Chemical Property|chemical properties]], not the [[Relative Atomic Mass|atomic mass]].
===References===
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Mendeleev, page 18, GCSE Chemistry; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Mendeleev, page 39, GCSE Chemistry, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Mendeleev, page 81, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']