The oxidation number of all the elements in the free state is:
Correct answer: C. 0
- A. 1
- B. 3
- C. 0
- D. -1
- E. -3
Explanation
All the elements have an oxidation number of 0 in the free state.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electrochemistry
Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
Practise Electrochemistry
696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrochemistry questions
The oxidation number of Nitrogen in HNO3 is:
In which of the following nitrogen compounds, does N has the highest oxidation state?
The potential difference of an electrochemical cell is measured by:
The reaction: Cl2 + H2O → HCl + HOCl is an example of:
In the following reaction: 3Br2 +6CO32- + 3H2O → 5Br-1 + BrO3-1 + 6HCO3-1
When electricity is passed through water in the presence of an acid, oxygen and _ are produced.