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28 January, 00:52

Which of the following is not a polyatomic ion? A) NO3-

B) CaCO3

C) C2H3O2-

D) C6H5COO-

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Answers (1)
  1. 28 January, 01:01
    0
    CaCO₃ is a compound in and of itself thus it is not a polyatomic ion.
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