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8 October, 15:27

Which of the following is composed of ions?

a.) CO2

b.) C

c.) Zn

d.) Fe2O3

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Answers (1)
  1. 8 October, 17:19
    0
    The answer is d.) Fe302. CO2 is a compound (One carbon atom, two oxygen atoms), letters b. and c. are elements (Carbon and zinc, respectively).
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