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Which changes occur when Pt2+ is reduced?

(1) The Pt2+ gains electrons and its oxidation number increases.

(2) The Pt2+ gains electrons and its oxidation number decreases.

(3) The Pt2+ loses electrons and its oxidation number increases.

(4) The Pt2+ loses electrons and its oxidation number decreases.

Verified Answer :

Answer: Option (2) is the correct answer.

Explanation:

When an element or compound gain electrons then this means the element is undergoing reduction.

Also, in reduction oxidation number of the element decreases.

For example, \(Pt^{2+} + 1e^{-} \rightarrow Pt^{+1}\)

Thus, we can conclude that the \(Pt^{2+}\) gains electrons and its oxidation number decreases.

The \(Pt^{+2}\)  gains electrons and its oxidation number decreases. Hence, option B is correct.

What is a redox reaction?

A chemical reaction that takes place between an oxidizing substance and a reducing substance.

When an element or compound gain electrons then this means the element is undergoing reduction.

For example, \(Pt^+ +1e^-\) → \(Pt^+\)

Thus, we can conclude that the gains electrons and its oxidation number decreases.

Hence, option B is correct.

Learn more about the redox reaction here:

https://brainly.com/question/13293425

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