3. What are polyatomic ions? Give examples.
Question 3. What are polyatomic ions? Give examples.
Atoms and Molecules
Science Class 9 Chapter 3 Atoms & Molecules Exercise Solution
Science Class 9 Chapter 3 Atoms & Molecules Exercise Solution.
Activity 3.2 NCERT Class 9 Science Atoms and Molecules
Experminent to demonstrate substances combine in definite proportion.
Activity 3.1 NCERT Class 9 Science Atoms and Molecules
Experiment to demonstrate that under a chemical reaction mass remain always constant. Law of conservation of mass.