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MCQs on Structure of The Atom
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MCQs on Structure of The Atom
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15 Questions

1. Which radioactive element is used in the treatment of cancer?
2. Why was the Thomson’s Model of an atom failed. i. It could not explain the screening of negative charges from that of positiv. ii. It did not tell about the presence of electron. iii. It did not give an idea about the discrete energy level. iv. It explained the atom as a whole to be electrically neutra. Choose the correct option from the following:
3. Which of the two will be chemically more reactive, Sulphur(S) with atomic number 16 or Chlorine (Cl) with atomic number 17?
4. Which of the following elements does not exhibit the electrovalencey?
5. Which scientist gave the concept of fixed energy levels around the nucleus?
6. What was the source of alpha particles in Rutherford scattering experiment?
7. Which of the following pairs are isobars?
8. Which radioactive element is used in the treatment of cancer?
9. What property of an element determines its chemical behaviour?
10. Which of the following is an incorrect statement in reference with observation in Rutherford’s α-particle scattering experiment?
11. Who discovered the electron?
12. Why was the Thomson’s Model of an atom failed. i. It could not explain the screening of negative charges from that of positiv. ii. It did not tell about the presence of electron. iii. It did not give an idea about the discrete energy level. iv. It explained the atom as a whole to be electrically neutra. Choose the correct option from the following:
13. What prevents an atom from being collapsed?
14. Which of the following pairs are isobars?
15. Who discovered the electron?

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