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the Law of periodicity (The classification of elements (Dmitry Mendeleev,…
the Law of periodicity
begane
the atomic theory
different form each other
can be redused
The classification of elements
Lavoiser
Four classes
Julius Meyer and Dmitry Mendeleev
arranged by atomic weight
Dmitry Mendeleev
predicted the proporties of elements thdt had not been discovered
graduall change as the anomic weight increased
rows and columns
modern periodic table
atomic number
row
period
slowly change
the end
sudden changr
Columns
groups
simillary properties
electron
hold
extra shell
outer shell
Chemical properties