Chemistry-Quantum Mechanical Model
NEET Chemistry Quantum Mechanical Model MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which combination of statements regarding quantum numbers and atomic orbitals is correct?
A
- An orbital with n=3 can have l values 0, 1, or 2. 2. The 3d orbital has quantum numbers l=2 and ml=0. 3. The 2p orbital is possible but 3f is not.
B
- The principal quantum number n determines only the shape of the orbital. 2. The 3d orbital has quantum numbers l=1 and ml=1. 3. The 1p orbital is a valid subshell.
C
- An orbital with n=2 can only have l=1. 2. The 3p orbital is valid, while the 2d orbital is not possible. 3. The quantum number l can be equal to n.
D
- Quantum numbers define the size, shape, and orientation of orbitals. 2. The 3f orbital is valid. 3. Quantum numbers are only applicable to hydrogen atoms.
Correct Answer
Option A
Detailed Explanation
Statement 1 is correct as n=3 allows l values of 0, 1, or 2. Statement 2 correctly identifies the 3d orbital with l=2 and ml values ranging from -2 to +2. Statement 3 is also true since 2p is valid while 3f is not possible as l cannot exceed n-1.
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