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26 Jun 2018
Which of the following statements is TRUE? (a) The atomic number is the same as the mass number. (b) The atomic number is the same as the number of protons. (c) The identity of a chemical element is determined by the number of valence electrons. (d) The radius of all atoms can be measured precisely. (e) Different isotopes of an element have different atomic numbers.
Which of the following statements is TRUE? (a) The atomic number is the same as the mass number. (b) The atomic number is the same as the number of protons. (c) The identity of a chemical element is determined by the number of valence electrons. (d) The radius of all atoms can be measured precisely. (e) Different isotopes of an element have different atomic numbers.
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lalithashwin156Lv10
30 May 2023
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28 May 2023
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Deanna HettingerLv2
28 Jun 2018
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