Modern Changing Table Question About Periodic Table And Mendeleev?
Question about periodic table and Mendeleev? - modern changing table
Why organize Mendeleev and other chemists of his time, the periodic table of elements, their atomic mass?
What events have changed this method?
In what order the elements in the modern periodic table is arranged?
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1 comments:
They found that when, in the order of their atomic weights and cluster are represented by seven items in the same column similar chemical properties.
When the noble gases, where he discovered a column 8 is required.
The existence of transition metals (of which) many of the same position to be filled and the discovery of the issue of lanthanides and actinides (the same elements even more), leading to the realization that the elements can be arranged if the size of the electron layer 2 , 8, 8, 18,18,32, ... were considered times.
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