The development of the periodic table

?
  • Created by: hfarley
  • Created on: 14-03-17 14:04

John Dalton, 1808
Arranged known elements in order of atomic mass.
Published table in his book 'A New System of Chemical Philosophy'.

John Newlands, 1864
Arranged elements in order of atomic mass.
Noticed that the properties of every eighth element seemed similar.
Produced a table showing his 'law of octaves'.
Assumed that all elements had been found, did not take into account that chemists were discovering new…

Comments

N1cky

Report

really helpful thanks