Quantum Numbers Statements | JEE Mains PYQ 2025 | Structure of Atom
Q. Given below are two statements:

Statement (I): For a given shell, the total number of allowed orbitals is given by .

Statement (II): For any subshell, the spatial orientation of the orbitals is given by −l to +l values including zero.

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

A. Both Statement I and Statement II are true
B. Both Statement I and Statement II are false
C. Statement I is false but Statement II is true
D. Statement I is true but Statement II is false
Explanation
Step 1: Analysis of Statement I

For a given principal quantum number n, total number of orbitals present in that shell is equal to .
✔ Statement I is correct.

Step 2: Analysis of Statement II

For a given azimuthal quantum number l, the magnetic quantum number ml can have values from −l to +l including zero.
This gives the spatial orientation of orbitals.
✔ Statement II is correct.

Correct Answer = Both Statement I and Statement II are true

Updated for JEE Main 2026: This PYQ is important for JEE Mains, JEE Advanced and other competitive exams. Practice more questions from this chapter.

Scroll to Top