JEE Mains · Chemistry · STD 11 - 4. Chemical bonding and molecular structure
Given below are two statements:
Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of \(E^{\circ}_{\text{Al}^{3+}/\text{Al}}\) is negative and \(E^{\circ}_{\text{Tl}^{3+}/\text{Tl}}\) is positive.
Statement II: The sum of first three ionization enthalpies of boron is very high when compared to that of aluminium. Due to this reason boron forms covalent compounds only and aluminium forms \(\text{Al}^{3+}\) ion.
In the light of the above statements, choose the correct answer from the options given below
- A Both Statement I and Statement II are true
- B Both Statement I and Statement II are false
- C Statement I is true but Statement II is false
- D Statement I is false but Statement II is true
Answer & Solution
Correct Answer
(A) Both Statement I and Statement II are true
Step-by-step Solution
Detailed explanation
Statement I: The standard reduction potential \(E^{\circ}_{\text{Al}^{3+}/\text{Al}}\) is \(-1.66\) V, which is highly negative, indicating that aluminium has a strong tendency to lose electrons and is highly electropositive. The standard reduction potential…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- 0.1 mol of the following given antiviral compound \((\mathrm{P})\) will weigh ________ \(\times 10^{-1} \mathrm{~g}\).

(Given : molar mass in \(\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{~N}: 14\), \(\mathrm{O}: 16, \mathrm{~F}: 19, \mathrm{I}: 127)\)JEE Mains 2025 Medium - The oxidation state of chromium in the final product formed in the reaction between KI and acidified \( K_{2}Cr_{2}O_{7} \) solution is:JEE Mains 2026 Medium
- In the given reactions identify \(\mathrm{A}\) and \(\mathrm{B}\).
JEE Mains 2024 Hard - Which of the following sets includes all the species that will change the orange colour of \(K_2Cr_2O_7\) in acidic medium?JEE Mains 2026 Medium
- Complex \(\mathrm{X}\) of composition \(\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6} \mathrm{Cl}_{\mathrm{n}}\) has a spin only magnetic moment of \(3.83\; BM\). It reacts with \(AgNO_{3}\) and shows geometrical isomerism. The \(IUPAC\) nomenclature of \(X\) isJEE Mains 2020 Hard
- Chlorine undergoes disproportionation in alkaline medium as shown below : \( \text { a } \mathrm{Cl}_2(\mathrm{~g})+\mathrm{b} \mathrm{OH}^{-}(\mathrm{aq}) \rightarrow \mathrm{c} \mathrm{ClO}^{-}(\mathrm{aq})+\mathrm{d} \mathrm{Cl}^{-}(\mathrm{aq}) +\mathrm{e} \mathrm{H}_2 \mathrm{O}(l)\) The values of \(a, \ b,\ c\) and \(d\) in a balanced redox reaction are respectively :JEE Mains 2024 Hard
More PYQs from JEE Mains
- The probability of a man hitting a target is \(\frac{2}{5}\). He fires at the target \(k\, times\) (\(k\), a given number). Then the minimum \(k\), so that the probability of hitting the target at least once is more than \(\frac{7}{10}\), isJEE Mains 2013 Hard
- A uniform sphere of mass \(500\; g\) rolls without slipping on a plane horizontal surface with its centre moving at a speed of \(5.00\; \mathrm{cm} / \mathrm{s}\). Its kinetic energy isJEE Mains 2020 Medium
- For a certain radioactive process the graph between \(In\, {R}\) and \({t}\,({sec})\) is obtained as shown in the figure. Then the value of half life for the unknown radioactive material is approximately \(....\,{sec}.\)
JEE Mains 2021 Medium - If \(\frac{tan(A-B)}{tan~A}+\frac{sin^{2}C}{sin^{2}A}=1,\) \(A, B, C\in(0,\frac{\pi}{2})\), thenJEE Mains 2026 Medium
- A solid sphere of mass \(M\) and radius \(R\) is divided into two unequal parts. The smaller part having mass \(M/8\) is converted into a sphere of radius \(r\) and the larger part is converted into a circular disc of thickness \(t\) and radius \(2R\). If \(I_1\) is moment of inertia of a sphere having radius \(r\) about an axis through its centre and \(I_2\) is the moment of inertia of a disc about its diameter, the ratio of their moment of inertia \(I_2/I_1 = \) _____.JEE Mains 2026 Hard
- The value of \(x\) in compound ' \(D\) ' is \(.........\).
JEE Mains 2023 Hard