Apparent charge on atom in molecule is___________________?
Correct answer: C. oxidation number
- A. valency
- B. coordination number
- C. oxidation number
- D. charge number
Explanation
Oxidation number is the apparent charge assigned to an atom by assuming that bonding electrons belong completely to the more electronegative atom. Valency describes combining capacity, so it is not necessarily equal to the apparent charge. The likely mistake is choosing valency because both terms are associated with an atom's combining behaviour.
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About Oxidation and Reduction
Oxidation involves loss of electrons, increase in oxidation number or addition of oxygen, while reduction involves electron gain, decrease in oxidation number or removal of oxygen. The topic covers oxidising and reducing agents, oxidation-number changes, redox equations and the distinction between oxidation at the anode and reduction at the cathode.
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