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1) Atomic number is the number equal to
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2) Rutherford’s scattering experiment proved the presence of
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3) Number of neutrons in an atom of hydrogen is
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4) The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?
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5) An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is
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6) Atoms of same element having different mass numbers are called________
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7) How many neutrons does iron have?
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8) The electronic configuration of an atom having atomic number ‘20’ is
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9) Nucleus of an atom consists of.
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V
10) Which of the following is not oxidation?
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