Structure of The Atom

Structure of the atom Worksheet-7

11. Tabulate the three sub atomic particles for Hydrogen, Deuterium, and Tritium.

12. What are the limitations of J.J. Thomson's model of an atom?

13. What are the limitations of Rutherford's model of an atom?

14. Describe valency by taking the examples of silicon and oxygen.

15. Na⁺ Ion has completely filled K and L shells. Explain.

Structure of the atom Worksheet-8

21. Out of proton and neutron, which is heavier?

22. Were neutrons known at the time Rutherford performed the scattering experiment?

23. Why is proton so named?

24. The cation is represented as M³⁺ What is the difference between the number of protons and electrons present?

25. What is the name of element whose atom has K and L shell completely filled ? To which group it belongs?

26. Do isobars have also identical chemical characteristics like isotopes ?

Structure of the atom Worksheet-9

31. The electronic configuration of an element Z is 2, 8, and 6. How many electrons does it require to have a stable configuration?

32. Which isotope is used in nuclear fuel?

33. Does ₁X³ and  ₂Y³ represent a pair of isotopes?

34. Name the elements which have the following electronic configuration :

(i) 2, 6 (ii) 2, 7 (iii) 2, 8, 1 (iv) 2, 8, 7 (iv) 2, 8

35. Out of L and M shells, which is near to the nucleus of an atom ?