THE “periodic” classification of the elements plays such an important part in courses of inorganic chemistry for students that a large wall diagram illustrating this classification has now become a ...

Capy, P., Bazin, C., Higuet, D. & Langin, T. (eds) Dynamics and evolution of transposable elements (Library of Congress, Austin, Texas, 1998).

The National Council of Educational Research and Training (NCERT) has removed a chapter on the periodic table of elements, among other topics, from the Class 10 science textbook as a part of a ...