Learn

Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceDiagram basedMediumData or graph

JEE Main 29 June 2022, Shift 2, Chemistry Q62

Question 62 of 90 in this shift, Chemistry question 2 of 30, Section A.

Which of the following is the correct plot for the probability density Ψ2\Psi^2 (r)(r) as a function of distance 'r' of the electron from the nucleus for 2s orbital?

The figure, in words

Four graphs of Psi^2(r) on the vertical axis against r on the horizontal axis, one per option.
  1. (1)[figure: graph of Ψ2(r)\Psi^2(r) vs rr, curve starts high at r = 0 and decreases steadily towards the r axis, no minimum touching the axis and no hump]
  2. (2)[figure: graph of Ψ2(r)\Psi^2(r) vs rr, curve starts high at r = 0, falls to the r axis (touching it), then rises to one hump and decays towards the axis]Official answer
  3. (3)[figure: graph of Ψ2(r)\Psi^2(r) vs rr, curve starts high at r = 0, crosses below the r axis, reaches a negative minimum, then rises back towards the axis from below]
  4. (4)[figure: graph of Ψ2(r)\Psi^2(r) vs rr, curve starts high at r = 0, falls to the r axis, rises to a hump, falls to the axis again, rises to a second smaller hump and decays]

Official answer

Option 2

NTA final key.

Chapter
Structure of Atom
Topic
Quantum Numbers
Idea tested
Interpreting Radial Wavefunction Graphs

Same topic in other shifts

All Quantum Numbers questions
  1. 4 Apr 2026, Shift 1 · Q53Which of the following is correct set of 44 quantum numbers of 19th19^{\text{th}} electron in Chromium (Atomic number =24=24) in accordance…MediumSingle correct
  2. 5 Apr 2026, Shift 1 · Q52Arrange the following atomic orbitals of multi electron atoms in order of increasing energy. A. n=3,l=2,m=+1n = 3, l = 2, m = +1 B.…MediumOther
  3. 5 Apr 2026, Shift 1 · Q53Identify the correct statements from the following : A. Heisenberg uncertainty principle is applicable to electrons. B. The size of 2px2p_x…EasyOther
  4. 5 Apr 2026, Shift 2 · Q52Which of the following statement(s) is/are true ? A. If two orbitals have the same value of (n+l)(n+l), the orbital with lower value of n…MediumOther
  5. 6 Apr 2026, Shift 1 · Q53Match the LIST-I with LIST-II List-I (Orbital) | List-II (Radial nodes and nodal plane) A. 2s | I. 1 Radial node + two nodal planes B. 3s…MediumMatch the list
  6. 2 Apr 2025, Shift 2 · Q52Which of the following statements are true ? (A) The subsidiary quantum number ll describes the shape of the orbital occupied by the…MediumOtherHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.