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 ...

Students can follow the steps given below to download the official CBSE Class 10 Date Sheet 2026 PDF from the board’s website: Visit the official CBSE website at cbse.gov.in. Click on the ...

The Central Board of Secondary Education (CBSE) has released the revised timetable for the 2026 Board Examinations for both Class 10 and Class 12. Students who are preparing for the upcoming board ...

IN 1940, we prepared the isotope of mass 211 of element 85 by bombarding bismuth with alpha particles accelerated in the 60-in. cyclotron of the Radiation Laboratory of the University of California 1.