Problem: Determine the oxidation number (oxidation state) of EACH element in the following six compounds.a. CuCO3b. CH4c. IFd. CH2Cl2 e. SO2 f. (NH4)2 CrO4

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  • For CuCO3, it is made up of Cu2+ and CO32- ions. Copper will appear to have ON of +2 (from its charge). Recall that O as oxide have an ON of -2, calculating for C:

  • x + 3(-2) = -2

  • x - 6 = -2

  • x = 6 - 2

  • x = +4

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Problem Details

Determine the oxidation number (oxidation state) of EACH element in the following six compounds.

a. CuCO3

b. CH4

c. IF

d. CH2Cl2

 e. SO2

 f. (NH4)2 CrO4

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