Given below are two statements, one is labelled as Statement I and the other is labelled as Statement II. Statement (I) : For a given shell, the total number of allowed orbitals is given by n 2 . 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:

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Both Statement I and Statement II are false

Chemistry · Structure of Atom

JEE Main 2025 — 23 January, Evening Shift — Question 34

Given below are two statements, one is labelled as Statement I and the other is labelled as Statement II.

Statement (I) : For a given shell, the total number of allowed orbitals is given by $\mathrm{n}^{2}$ .

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:

For shell $n$ , allowed values of $\ell$ are $\ell=0 \text{\; to\; } n-1$

Each subshell has $(2\ell+1)$ orbitals.

Total orbitals $= 1+3+5+\cdots+(2n-1)=n^2$

Thus, Statement I is true.

Magnetic quantum number, $m_\ell=-\ell \text{ \;to \;} +\ell$

These values represent different spatial orientations of orbitals in space.

Thus, Statement II is true.

Thus, both Statement I and Statement II are true.

Answer key and solution verified before publishing.

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