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16 February, 12:49

Why is cobalt placed before nickel on the periodic table of elements even though it has a higher average atomic mass than nickel

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Answers (2)
  1. 16 February, 14:49
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    Just because it has a smaller atomic number. Elements are not lined up according to the higher average atomic mass, but rather according to the higher atomic number.
  2. 16 February, 15:06
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    Because it has a smaller atomic number. Elements are not lined up according to the higher average atomic mass, but rather according to the higher atomic number.
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