Tag: De Chancourtois

Dmitri Mendeleev was one of the great chemists of the 19th century. He correctly predicted the properties of more than three undiscovered elements. His contributions to chemistry won him the title of the father of the modern periodic table.

Dmitri Mendeleev's Periodic Table was the most scientific periodic table in his time, which led to the formation of the modern periodic table. Mendeleev not only group the elements that shared similar properties but also correctly predicted the properties of undiscovered elements. And this was groundbreaking.

De Chancourtois's helical periodic table was the first periodic table that introduced the notion of the periodicity of elements.

Bohr's atomic theory was prosed by Neils Bohr in 1913. It was the first to inaugurate the quantum theory in the atom.

Rutherford's atomic model was a landmark, which explained the existence of the nucleus.

Rutherford's gold scattering experiment is an important event in the history of science because it led to the discovery of the nucleus.

The plum pudding is an atomic model formulated by J. J. Thomson. According to the model, the negative charge particles are embedded in the positive charge cloud in the atom.

Thomson's all three experiments are discussed. He studied magnetic and electric properties of cathode rays and determined the mass-to-charge ratio of the electron.