Grade 9 Chemistry Review Chemistry Class 9 Unit 5: Exercise Questions and Answers Part 1: Bonding & Charge I State octet and duplet rules. Octet Rule: Atoms react to achieve eight electrons in their outermost shell for stability. Duplet Rule: The lightest atoms (H, Li, Be) react to achieve two electrons in their outermost shell, … Read more

Looking for Class 9 Chemistry Chapter 4 notes and short questions? Don’t worry, PkNotes has got you covered! Here are some short-response questions (SRQs) to help you practice and revise the key concepts easily. Short Question Periodicty of Properties Metallic Character, Density and Reactivity

We have uploaded the solution of the exercise for Chemistry Class 10, Chapter 4: Electrochemistry. These solutions are based on the National Book Foundation textbook, which is the new book recommended by FBISE according to its latest curriculum. In addition to the exercise solutions, we have also added a “Test Yourself” button below the PDF. … Read more