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Classification of Elements and Periodicity in Properties

JEE Main 2025 (Online) 24th January Evening ShiftMCQEasy📈 Topic in 39% papers+4−1
Ques. 1JEE Main 2025, 24 January (Evening Shift)

The successive 5 ionisation energies of an element are 800, 2427, 3658, 25024 and 32824 kJ/mol, respectively. By using the above values predict the group in which the above element is present :

  1. Group 4
  2. Group 2
  3. Group 13
  4. Group 14

Answer

(3) Group 13

Solution

Look for the first huge jump in successive IE:

IE3 IE4: 3658 25024 (jump 6.8 )

3 valence electrons, ns2np1 group 13

Answer: (3)

Keep practising — Classification of Elements and Periodicity in Properties

Ques. 2JEE Main 2025, 23 January (Morning Shift)

The element that does not belong to the same period of the remaining elements (modern periodic table) is:

  1. Platinum
  2. Osmium
  3. Iridium
  4. Palladium
Ques. 3JEE Main 2025, 22 January (Morning Shift)

Match List-I with List-II.

  1. A-IV, B-I, C-II, D-III
  2. A-III, B-IV, C-II, D-I
  3. A-II, B-III, C-IV, D-I
  4. A-IV, B-I, C-III, D-II
Ques. 4JEE Main 2025, 22 January (Morning Shift)

Which of the following electronegativity order is incorrect?

  1. S<Cl<O<F
  2. Al<Si<C<N
  3. Al<Mg<B<N
  4. Mg<Be<B<N
Ques. 5JEE Main 2025, 22 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. Both Statement I and Statement II are false
  2. Both Statement I and Statement II are true
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true

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