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 ...

Here you get the CBSE Class 10 Science chapter 5, Periodic Classification of Elements: NCERT Exemplar Problems and Solutions (Part-III). This part of the chapter includes solutions for Question No.42 ...

CBSE Class 10 Science Extra Questions and Answers for Chapter 5 - Periodic Classification of Elements are available here for free PDF download. All these questions and answers are prepared by the ...

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 ...

Earlier in a bid to reduce the burden on students, the National Council of Educational Research and Training (NCERT) dropped the full chapter on the Periodic Classification of Elements, a full chapter ...

The periodic table of elements—also known as Mendeleev’s table—was developed in 1869 by Russian chemist Dmitri Mendeleev. It organizes all known chemical elements by their atomic number, which is the ...

Goodbye Darwin, Mendeleev & Mendel! To make for a lighter academic load after the Covid pandemic, the National Council of Educational Research and Training has decided to drop chapters on the periodic ...

After widespread criticism over the alleged removal of the Periodic Table from Class 10 chemistry textbooks, the National Council of Educational Research and Training (NCERT) has now issued a ...