-
1820
Alexandre was born in Paris France. -
1848
He went to join the teaching faculty as professor of mine surveying. -
1852
He was named professor of geology at Ecole Nationale superieure de mines de Paris. -
1862
He created a fully functioning and unique system of organizing the chemical elements.He was the first to organize the elements by atomic weights. He plotted a graph of the elements around a cylinder with a circumference equal to 16 units to correspond to the weight of oxygen. The elements that appeared above and below each other shared similar periodic properties between each other. -
1867
Alexandre was awarded the leion d'honer by Napolean 3 of France -
1887
He died.
