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p-Block Elements (Group 13 & 14)

JEE Main 2026 (Online) 23rd January Evening ShiftMCQEasy📈 Topic in 21% papers+4−1
Ques. 1JEE Main 2026, 23 January (Evening Shift)

It is noticed that Pb2+ is more stable than Pb4+ but Sn2+ is less stable than Sn4+. Observe the following reactions. PbO2 + Pb 2PbO; rG (1) SnO2 + Sn 2SnO; rG (2) Identify the correct set from the following

  1. rG (1) > 0; rG (2) < 0
  2. rG (1) < 0; rG (2) > 0
  3. rG (1) < 0; rG (2) < 0
  4. rG (1) > 0; rG (2) > 0

Answer

(2) rG (1) < 0; rG (2) > 0

Solution

Both reactions convert the +4 and 0 states into the +2 state.

Reaction 1: Pb2+ is more stable than Pb4+ (inert pair effect) formation of PbO is favourable rG (1) < 0.

Reaction 2: Sn4+ is more stable than Sn2+ formation of SnO from SnO2 and Sn is not favourable rG (2) > 0.

Answer: (2)

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

Ques. 2JEE Main 2026, 21 January (Morning Shift)

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

  1. Both Statement I and Statement II are false
  2. Statement I is false but Statement II is true
  3. Both Statement I and Statement II are true
  4. Statement I is true but Statement II is false
Ques. 3JEE Main 2025, 7 April (Morning Shift)

The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 kJ mol-1 respectively. The above values are lowest among their group members. The nature of their ions A2+ and B4+ respectively is

  1. both reducing
  2. oxidising and reducing
  3. both oxidising
  4. reducing and oxidising
Ques. 4JEE 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
Ques. 5JEE 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. 6JEE 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. 7JEE 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. 8JEE 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. 9JEE 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. 10JEE 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. 11JEE 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

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