Read and download NCERT Class 9 Science Structure Of The Atom Questions in NCERT book for Class 9 Science. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Science textbook for Class 9 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 9 Science to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 9 Science Chapter 4 Structure Of The Atom
Class 9 Science students should refer to the following NCERT Book Chapter 4 Structure Of The Atom in Class 9. This NCERT Book for Class 9 Science will be very useful for exams and help you to score good marks
Chapter 4 Structure Of The Atom NCERT Book Class 9
STRUCTURE OF THE ATOM
1. Which of the following correctly represent the electronic distribution in the Mg atom?
(a) 3, 8, 1
(b) 2, 8, 2
(c) 1, 8, 3
(d) 8, 2, 2
2. Rutherford’s ‘alpha (α) particles scattering experiment’ resulted in to discovery of
(a) Electron
(b) Proton
(c) Nucleus in the atom
(d) Atomic mass
3. Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportion
(a) (i), (ii) and (iii)
(b) (i), (iii) and (iv)
(c) (ii), (iii) and (iv)
(d) (i), (ii) and (iv)
4. Which of the following statements about Rutherford’s model of atom are correct?
(i) considered the nucleus as positively charged
(ii) established that the α–particles are four times as heavy as a hydrogen atom
(iii) can be compared to solar system
(iv) was in agreement with Thomson’s model
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) only (i)
5. One electron is present in the outer most shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outer most shell?
6. In the atom of an element X, 6 electrons are present in the outermost shell. If it acquires noble gas configuration by accepting requisite number of electrons, then what would be the charge on the ion so formed?
7. In response to a question, a student stated that in an atom, the number of protons is greater than the number of neutrons, which in turn is greater than the number of electrons. Do you agree with the statement? Justify your answer.
8. The atomic number of calcium and argon are 20 and 18 respectively, but the mass number of both these elements is 40. What is the name given to such a pair of elements?
9. Helium atom has 2 electrons in its valence shell but its valency is not Explain.
10. An element X has a mass number 4 and atomic number 2. Write the valency of this element?
11. Why do Helium, Neon and Argon have a zero valency?
12. Enlist the conclusions drawn by Rutherford from his α-ray scattering experiment.
13. In what way is the Rutherford’s atomic model different from that of Thomson’s atomic model?
14. What were the drawbacks of Rutherford’s model of an atom?
15. What are the postulates of Bohr’s model of an atom?
16. Show diagramatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number.
Please refer to attached file for NCERT Class 9 Science Structure Of The Atom Questions
| NCERT Class 9 Science Matter In Our Surroundings |
| NCERT Class 9 Science Matter In Our Surroundings Questions |
| NCERT Class 9 Science Is Matter Around Us Pure |
| NCERT Class 9 Science Is Matter Around Us Pure Questions |
| NCERT Class 9 Science Atoms And Molecules |
| NCERT Class 9 Science Atoms And Molecules Questions |
| NCERT Class 9 Science Structure Of The Atom |
| NCERT Class 9 Science Structure Of The Atom Questions |
| NCERT Class 9 Science The Fundamental Unit Of Life |
| NCERT Class 9 Science The Fundamental Unit Of Life Questions |
| NCERT Class 9 Science Tissues |
| NCERT Class 9 Science Tissues Questions |
| NCERT Class 9 Science Diversity In Living Organisms |
| NCERT Class 9 Science Diversity In Living Organisms Questions |
| NCERT Class 9 Science Motion |
| NCERT Class 9 Science Motion Questions |
| NCERT Class 9 Science Force And Laws Of Motion |
| NCERT Class 9 Science Force And Laws Of Motion Questions |
| NCERT Class 9 Science Gravitation |
| NCERT Class 9 Science Gravitation Questions |
| NCERT Class 9 Science Work And Energy |
| NCERT Class 9 Science Work And Energy Questions |
| NCERT Class 9 Science Sound |
| NCERT Class 9 Science Sound Questions |
| NCERT Class 9 Science Why Do We Fall Ill |
| NCERT Class 9 Science Why Do We Fall Ill Questions |
| NCERT Class 9 Science Natural Resources |
| NCERT Class 9 Science Natural Resources Questions |
| NCERT Class 9 Science Improvement In Food Resources |
| NCERT Class 9 Science Improvement In Food Resources Questions |
| NCERT Class 9 Science Solutions and Answers |
Science NCERT Book Class 9 Chapter 4 Structure Of The Atom
The above NCERT Books for Class 9 Science Chapter 4 Structure Of The Atom have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 4 Structure Of The Atom Science Class 9 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 4 Structure Of The Atom NCERT etextbooks as the exams for Class 9 Science are always asked as per the syllabus defined in these ebooks. These Class 9 Chapter 4 Structure Of The Atom book for Science also includes collection of question. We have also provided NCERT solutions for Class 9 Science which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 9 students.
NCERT Book Class 9 Science Chapter 4 Structure Of The Atom
The latest NCERT book for Chapter 4 Structure Of The Atom pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 9 Science Chapter 4 Structure Of The Atom are designed to enhance the overall understanding of students. All Class 9 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 9 students.
Chapter 4 Structure Of The Atom NCERT Book Class 9 Science
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Class 9 Science Chapter 4 Structure Of The Atom NCERT Book
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Class 9 Chapter 4 Structure Of The Atom NCERT Book Science
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