Mendeleev's table was more systematic. Elements were arranged in order of atomic masses.
The table of Mendeleev contained more elements and also he was able to make serious predictions for new elements.
on the right side of the peridic table
Dmitri Mendeleev
periods
Element 4 Beryllium
verticle rows are grouped
Mg for magnesium
Currently 112 elements.
Americium is a member of the actinides group.
Atomic Mass
Gold (Au) is classified as a transition metal.
This chemical element is helium.
It is a table in which chemical elements are presented in order of their atomic numbers.