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Students use the terms isotope, atomic number, mass number, and atomic mass. Atomic Theory: Structure of the Atom: Students use the terms isotope, atomic number, mass number, and atomic mass to ...
The CBSE Class 9 Science syllabus for 2025-26 is aligned with the National Curriculum Framework for School Education (NCFSE) 2023. It includes the complete breakdown of units, topics, and assessment ...
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