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p-Block Elements (Group 13 & 14)

JEE Main 2025 (Online) 7th April Evening ShiftMCQEasy📈 Topic in 26% papers+4−1
Ques. 1JEE Main 2025, 7 April (Evening Shift)

The correct statements from the following are : Choose the correct answer from the options given below :

  1. A, B, D and E only
  2. A, C and D only
  3. A, B, C and E
  4. B, D and E only

Answer

(1) A, B, D and E only

Solution

As per NCERT, the stability of the +1 oxidation state increases down group 13 because of the inert pair effect.

(A) Tl3+ readily changes to Tl+ (E Tl3+/Tl = +1.26 V), so it is a powerful oxidising agent. Correct.

(B) E Al3+/Al = -1.66 V, so Al3+ is not reduced easily. Correct.

(C) Tl3+ is not stable in solution (it is an oxidising agent). Incorrect.

(D) Due to the inert pair effect, Tl+ is more stable than Tl3+. Correct.

(E) Al3+ and Tl+ are the stable states of Al and Tl. Correct.

A, B, D and E are correct.

Answer: (1)

Keep practising — p-Block Elements (Group 13 & 14)

Ques. 2JEE Main 2025, 4 April (Morning Shift)

Given below are the pairs of group 13 elements showing their relation in terms of atomic radius. (B < Al), (Al < Ga), (Ga < In) and (In < Tl). Identify the elements present in the incorrect pair and in that pair find out the element (X) that has higher ionic radius (M3+) than the other one. The atomic number of the element (X) is

  1. 49
  2. 81
  3. 31
  4. 13
Ques. 3JEE Main 2025, 4 April (Evening Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Statement I is correct but Statement II is incorrect
  2. Both Statement I and Statement II are incorrect
  3. Statement I is incorrect but Statement II is correct
  4. Both Statement I and Statement II are correct
Ques. 4JEE Main 2025, 4 April (Evening Shift)

The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively :

  1. B & Tl
  2. Tl & B
  3. B & In
  4. B & Ga
Ques. 5JEE Main 2025, 3 April (Evening Shift)

The correct orders among the following are Choose the correct answer from the options given below:

  1. B and D Only
  2. A and B Only
  3. C and D Only
  4. A and C Only
Ques. 6JEE Main 2025, 2 April (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Statement I is correct but Statement II is incorrect
  2. Both Statement I and Statement II are correct
  3. Statement I is incorrect but Statement II is correct
  4. Both Statement I and Statement II are incorrect
Ques. 7JEE Main 2025, 29 January (Morning Shift)

The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising capacity.

  1. E Sn4+/Sn2+ = +0.15 V
  2. E Al3+/Al = -1.66 V
  3. E Pb4+/Pb2+ = +1.67 V
  4. E Tl3+/Tl = +1.26 V
Ques. 8JEE Main 2025, 28 January (Morning Shift)

Consider the following elements In, Tl, Al, Pb, Sn and Ge. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are

  1. +4 and +1
  2. +4 and +3
  3. +1 and +4
  4. +2 and +3
Ques. 9JEE Main 2025, 24 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but Statement II is true
  2. Both Statement I and Statement II are false
  3. Both Statement I and Statement II are true
  4. Statement I is true but Statement II is false
Ques. 10JEE Main 2025, 23 January (Evening Shift)

Given below are the atomic numbers of some group 14 elements. The atomic number of the element with lowest melting point is :

  1. 14
  2. 50
  3. 6
  4. 82

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