The number of charges present on a cation depends on the number of electrons by the atom?
Correct answer: B. Lost
- A. Gain
- B. Lost
- C. Accept
- D. Produced
Explanation
The number of charges present on a cation depends on the number of electrons lost by the atom. Cations are positively charged ions, which means that they have more protons than electrons. When an atom loses electrons, it becomes a cation. The number of electrons that an atom loses determines the number of positive charges on the cation. For example, a sodium atom has 11 electrons and 11 protons. If a sodium atom loses 1 electron, it will become a sodium cation with a charge of +1. The sodium cation has 10 electrons and 11 protons, so it has a net positive charge of +1. The opposite is true for anions. Anions are negatively charged ions, which means that they have fewer protons than electrons. When an atom gains electrons, it becomes an anion. The number of electrons that an atom gains determines the number of negative charges on the anion.
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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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