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chemistry 02 structure of atoms
Pg.No.
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Page 1
Q.1. The smallest constituent unit of ordinary matter that has the properties of a chemical element is known as?
Q.2. Which is the smallest and lightest atom?
Q.3. Which is the smallest particle of an element that can have a stable and independent existence?
Q.4. A collection of 6.023 x 10
23
particles is known as?
Q.5. What is the value of Avogadro's number?
Q.6. The ratio of mass of one atom of the element to 1/12th part of the mass of one atom of carbon -12, is known as?
Q.7. Atomic mass is equal to?
Q.8. What is the actual mass of one atom of an element?
Q.9. Which mass indicates, how many times one molecule of a substance is heavier in comparision to 1/12th mass of one atom of carbon-12?
Q.10. What are the fundamental particles of atoms?
Q.11. Who discovered electron?
Q.12. Who gave electron its name?
Q.13. What is the relative charge of electron?
Q.14. What is the absolute charge of electron?
Q.15. What is relative mass of electron?
Q.16. What is absolute mass of electron?
Q.17. What is charge to mass ratio (e/m) of electron?
Q.18. Which experiment proved the existence of electrons?
Q.19. Who discovered proton?
Q.20. Who named proton?
Q.21. What is the relative charge of proton?
Q.22. What is the absolute charge of proton?
Q.23. What is relative mass of proton?
Q.24. What is absolute mass of proton?
Q.25. What is charge to mass ratio of proton?
Q.26. Which experiment proved the existence of protons?
Q.27. Who discovered neutron?
Q.28. What is the relative charge of neutron?
Q.29. What is the absolute charge of neutron?
Q.30. What is relative mass of neutron?
Q.31. What is absolute mass of neutron?
Q.32. What is charge to mass ratio of neutron?
Q.33. Which radio active phenomena proved the existence of neutron?
Q.34. The number of protons or electrons in an atom of an element is known as?
Q.35. Atomic number is denoted by?
Q.36. The sum of number of protons and neutrons in an atom of element is known as?
Q.37. Mass number is denoted by?
Q.38. Atoms of the elements having same atomic number but different mass numbers are known as?
Q.39. Atoms of the elements having different atomic number but same mass numbers are known as?
Q.40. Atoms having same number of neutrons are known as?
Q.41. Atoms or molecules or ions containing same number of electrons are known as?
Q.42. Who gave Plum-Pudding or watermelon model of an atom?
Q.43. Who gave nuclear atomic model of an atom?
Q.44. Protons and neutrons are collectively known as?
Q.45. The nucleus of atoms consists of?
Q.46. What is approximate diameter of nucleus of an atom?
Q.47. What is approximate diameter of an atom?
Q.48. The seven color band formed when light is passed through a prism, is known as?
Q.49. Which are the seven colors of spectrum?
Q.50. When spectral lines obtained from atomic spectra is placed in magnetic field, they are splitted into number of fine lines, this effect is known as?
Q.51. When spectral lines obtained from atomic spectra is placed in electric field, they are splitted into number of fine lines, this effect is known as?
Q.52. Which model explains the concept of Quantization of energy?
Q.53. Which model explains the concept of photon and quanta?
Q.54. Which equation explains dual nature of electron?
Q.55. Which principle states that exact position and momentum of a quantum particle can not be determined simultaneously?
Q.56. Which equation explains the wave nature of electron?
Q.57. Which model explains the orbital path of electron in an atom?
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