Question : In which year did AEB de Chancourtois organise the elements by atomic weight by graphing the elements around a cylinder with a circumference of 16 units, corresponding to the weight of oxygen (O)?
Option 1: 1862
Option 2: 1860
Option 3: 1870
Option 4: 1868
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Correct Answer: 1862
Solution : The correct option is 1862 .
A.E.B. de Chancourtois attempted to organise the elements by atomic weight using a cylindrical representation, and he called this arrangement the Telluric Helix. He proposed this system in 1862. In the Telluric Helix, elements were arranged around a cylinder in order of increasing atomic weight, with a single loop corresponding to a revolution around the cylinder.
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