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 ...
A MODERN table of chemical elements must show electronic configurations as well as the variation in the properties of the elements with atomic number. It should also include the lanthanide and ...
NCERT has removed a chapter on the periodic table of elements, among other topics, from the Class 10 science textbook The National Council of Educational Research and Training (NCERT) has removed a ...
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