Question

Oxidation-reduction reactions A. must include oxygen. B. can include an atom or ion being reduced without an atom or ion being oxidized. C. do not need to have both an oxidation and a reduction reaction. D. must include a transfer of electrons from one atom or ion to another.

Answer 1

d. must include a transfer of electrons from one atom or ion to another

Answer 2

Answer: The correct answer is Option D.

Step-by-step explanation:

Redox reaction is defined as the reaction in which oxidation and reduction reaction occur simultaneously.

Oxidation reaction is defined as the chemical reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.

`X\rightarrow X^(n+)+ne^-`

Reduction reaction is defined as the chemical reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

`X^(n+)+ne^-\rightarrow X`

Electrons are transferred from one atom to another in this type of reaction.

Hence, the correct answer is Option D.