Can you do a comparative study of previous syllabus of Chemistry chapter 9th and 10th with that of new supplementary syllabus?

Earlier, Class 11 Chemistry included full chapters on Hydrogen and s-block elements, covering topics like isotopes, hydrides, alkali and alkaline earth metals. But in the new supplementary syllabus, both Chapter 9 and 10 have been completely removed to reduce academic load. These deletions are part