ExamBro
ExamBro
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

  1. A Both Statement I and Statement II are true
  2. B Both Statement I and Statement II are false
  3. C Statement I is true but Statement II is false
  4. D Statement I is false but Statement II is true
Verified Solution

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…