Match the scientists to their contributions to the development of the periodic table.

Scientists: Johann Dobhereiner, Henry Moseley, John Newlands, Dmitri Mendeleev


Contributions:

1) proposed a periodic table that accommodated for

the discovery of new elements

2) proposed a triad arrangement based on the elements’

physical and chemical similarities

3) proposed a periodic table based on the repeating properties

of the elements like an octave in music

4) proposed a periodic table based on the increasing order of

the elements’ atomic numbers