MCAT General Chemistry Question 154: Answer and Explanation

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Test Information

Question: 154

4. What is the oxidation number of chlorine in NaClO?

  • A. -1
  • B. 0
  • C. +1
  • D. +2

Correct Answer: C

Explanation:

In NaClO (sodium hypochlorite), sodium carries its typical +1 charge, and oxygen carries its typical -2 charge. This means that the chlorine atom must carry a +1 charge in order to balance the overall charge of zero.

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