The correct statements from the following are.
(A) $\mathrm{Tl}^{3+}$ is a powerful oxidising agent
(B) $\mathrm{Al}^{3+}$ does not get reduced easily
(C) Both $\mathrm{Al}^{3+}$ and $\mathrm{Tl}^{3+}$ are very stable in solution
(D) $\mathrm{Tl}^{+}$is more stable than $\mathrm{Tl}^{3+}$
(E) $\mathrm{Al}^{3+}$ and $\mathrm{Tl}^{+}$are highly stable
Choose the correct answer from the options given below:
Select the correct option:
A
(A), (B), (C), (D) and (E)
B
(B), (D) and (E) only
C
(A), (C) and (D) only
D
(A), (B), (D) and (E) only
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Sol. (i) True, $\mathrm{T} \ell^{+}$is more stable than $\mathrm{T} \ell^{3+}$, due to inert pair effect. So $\mathrm{T} \ell^{3+}$ is a powerful oxidising agent.
(ii) True, $\mathrm{E}_{\mathrm{Ar}^{3+/ 4}}^{\circ}=-1.66 \mathrm{~V}$. So it is difficult to reduce $\mathrm{A} \ell^{3+}$. So $\mathrm{A} \ell^{3+}$ is highly stable.
(iii) False, as $\mathrm{T} \ell^{3+}$ is unstable
(iv) True, $\mathrm{T} \ell^{+}$is more stable than $\mathrm{T} \ell^{3+}$
v) True, $\mathrm{A} \ell^{3+}$ and $\mathrm{T} \ell^{+}$are highly stable
Hello 👋 Welcome to Competishun – India’s most trusted platform for JEE & NEET preparation. Need help with JEE / NEET courses, fees, batches, test series or free study material? Chat with us now 👇
