A century and a half ago, a Russian chemistry professor published a classification of all the known elements, organized by atomic weight. Today, the system that he created for his students — plus some ...

As the Class 10th Science board exam nears, students all over the country are always in a time race to cement their grasp on the basic concepts, with the foremost being the periodic table. This is the ...

Before the year is out, let's raise a glass to the great Russian chemist Dmitrii Mendeleev, to celebrate the 140th anniversary of his periodic table of the elements. Russia has commemorated this, and ...