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Book Back Questions & Answers, Exercises, Solutions, Tests, Quizzes, Videos and Podcasts for Class 9 | Atomic Structure| Unit 11 | | Science | Samacheer Kalvi – English Medium

New book back questions, answers: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/atomic-structure/exercises

Podcasts: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/atomic-structure/videos

Tests & Quizzes: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/atomic-structure/tests

Flash Cards: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/atomic-structure/flashcards

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00:00 Introduction
00:15 Choose the correct answer
05:19 Fill in the blanks
07:25 True or False

Questions answered in this video –

1. Change in the number of neutrons in an atom changes it to

2. The term nucleons refer to

3. The number of protons, neutrons and electrons present respectively in

4. The correct electronic configuration of potassium is

5. Calcium and Argon are examples of a pair of _________________

6. Total number of electrons that can be accommodated in an orbit is given by ______________

7. _____________ isotope is used in the nuclear reactors

8. Th e number of neutrons present in is ___________

9. Th e valency of Argon is ___________

10. In an atom, electrons revolve around the nucleus in fixed orbits

11. Isotopes of an element have different atomic numbers.

12. Electrons have negligible mass and charge

13. Smaller the size of the orbit, lower is the energy of the orbit.

14. The maximum number of electron in L Shell is 10.

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