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The nucleus of an atom contains

The nucleus of an atom contains - 25(4 NVA 26(5 NVA 27 28...

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1. FIRST ANSWER IS THE CORRECT ANSWER 1. 2. The nucleus of an atom contains 3. (1) at least one proton and perhaps some neutrons 4. (2) at least one proton and one electron 5. (3) only neutrons 6. (4) NVA 7. (5) NVA 8. 9. 10. 11. The atomic number of an atom is 12. (1) the number of protons 13. (2) the number of protons plus the number of neutrons 14. (3) the number of protons plus the number of electrons 15. (4) NVA 16. (5) NVA 17. 18. 19. 20. The atomic mass number of an atom is 21. (1) the number of protons plus the number of neutrons 22. (2) the number of protons 23. (3) the sum of the numbers of protons, neutrons, and 24. electrons
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Unformatted text preview: 25. (4) NVA 26. (5) NVA 27. 28. 29. 30. The chemical element that an atom belongs to is determined by its 31. (1) atomic number 32. (2) atomic mass number 33. (3) number of energy levels 34. (4) NVA 35. (5) NVA 36. 37. 38. 39. Atoms that have the same number of protons but different numbers of neutrons 40. are called 41. (1) isotopes 42. (2) ions 43. (3) molecules 44. (4) NVA 45. (5) NVA 46. 47. 48. 49. The lowest energy level in an atom or molecule is the one termed the 50. (1) ground level 51. (2) ionization level 52. (3) excitation level 53. (4) NVA 54. (5) NVA 55....
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