What is the oxidation number of Cl in KClO₃?
Answer and explanation
Correct answer: D.
- Step 1: The oxidation numbers in a neutral compound sum to zero, with H = +1, O = −2 and Group 1 metals = +1.
- Step 2: Solving for Cl gives +5.
Answer
.
Why not the others: : The sign was reversed. and do not fit.
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