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Chemistry · Structure of Atom

JEE Main 2026 — 5 April, Evening Shift — Question 50

Which of the following statement(s) is/are true ? (A) If two orbitals have the same value of ( n+l\mathrm{n}+l ), the orbital with lower value of nn will have lower energy. (B) Energies of the orbitals in the same subshell increase with increase in atomic number. (C) The size of 2px2 p_{x} orbital is less than the size of 3px3 \mathrm{p}_{\mathrm{x}} orbital. (D) Among 5f,6s, 4d, 5p and 5d orbitals, none of the orbitals have 2 radial nodes. Choose the correct answer from the options given below:

  1. Option A:

    A, B and C only

  2. Option B:

    A and C only

    Correct
  3. Option C:

    C and D only

  4. Option D:

    A only

Answer: B

Step-by-step solution

(a) If two orbitals are having same value of n+ℓ\mathrm{n}+\ell then the orbital having lower value of ' nn ' will have lower energy. (b) Energies of the orbitals in the same subshell decreases with increase in atomic number. (c) Size of 2px<3px2 p_{x}<3 p_{x} (d) Orbital Radial node (n- ℓ−1\ell-1 )

5f16s54d15p35d2\begin{array}{c c} 5f & 1 \\ 6s & 5 \\ 4d & 1 \\ 5p & 3 \\ 5d & 2 \end{array}

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
5 April, Evening Shift
Subject
Chemistry
Chapter
Structure of Atom
Topic
Quantum Numbers and Sommerfeld
Which of the following statement(s) is/are true ? (A) If two orbitals… | JEE Main 2026 PYQ with Solution · DhiX AI