Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...
Two scientists in Moscow have proposed replacing the periodic table as the chief way to organize elements. Rather than ordering by atomic number (the number of protons in the nucleus) the chart lists ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback