Question

Find the odd one out with respect to the transfer of electrons.

• A. $\mathrm{A}\to {\mathrm{A}}^{+}$
• B. ${\mathrm{A}}^{-1}\to {\mathrm{A}}^{-2}$
• C. $\mathrm{A}\to {\mathrm{A}}^{-1}$
• D. ${\mathrm{A}}^{++}\to {\mathrm{A}}^{+}$

Answer 1

The correct option is A

$\mathrm{A}\to {\mathrm{A}}^{+}$

Explanation of correct option:

(A) $\mathrm{A}\to {\mathrm{A}}^{+}$- Here $\mathrm{A}$ loses one electron which leads to the formation of ${\mathrm{A}}^{+}$. This process is oxidation.

Explanation of incorrect options:

(B) ${\mathrm{A}}^{-1}\to {\mathrm{A}}^{-2}$

Here ${\mathrm{A}}^{-1}$ is gaining one electron. This process is reduction.

(C) $\mathrm{A}\to {\mathrm{A}}^{-1}$

Here $\mathrm{A}$ is gaining one electron. This process is reduction.

(D) ${\mathrm{A}}^{++}\to {\mathrm{A}}^{+}$

Here ${\mathrm{A}}^{++}$ is gaining one electron. This process is reduction.

So, the odd one out is $\mathrm{A}\to {\mathrm{A}}^{+}$which is the oxidation process.

Hence, the correct option is (A).