Chemistry · Structure of Atom

JEE Main 2024 — 30 January, Shift 1 — Question 62

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

Statement-I: The orbitals having same energy are called as degenerate orbitals.

Statement-II: In hydrogen atom, 3p and 3d orbitals are not degenerate orbitals.

In the light of the above statements, choose the most appropriate answer from the options given

Option A:
Statement I is true but Statement II is false
Correct
Option B:
Both Statement I and Statement II are true
Option C:
Both Statement I and Statement II are false
Option D:
Statement I is false but Statement II is true

Answer: A

Step-by-step solution

Statement I is true: Orbitals having the same energy are called degenerate orbitals.

Statement II is false: In a hydrogen atom, the energy of an orbital depends only on the principal quantum number $(n)$ . Hence, all orbitals with the same value of $n$ , such as $3s$ , $3p$ , and $3d$ , have the same energy and are therefore degenerate.

Thus, statement I is true but statement II is false.

Answer key and solution verified before publishing.

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Exam: JEE Main 2024
Paper: 30 January, Shift 1
Subject: Chemistry
Chapter: Structure of Atom
Topic: Quantum Mechanical Model of Atom - Schrödinger