Home › MCQs › EEJ MAIN Chemistry › Question #1013
Back to Questions
EEJ MAIN Chemistry QUESTION #1013
Question 1
Statement (I): A spectral line will be observed for a \(2p_x \to 2p_y\) transition. Statement (II): \(2p_x\) and \(2p_y\) are degenerate orbitals.
  • Both Statement I and Statement II are true
  • Statement I is false but Statement II is true✔️
  • Both Statement I and Statement II are false
  • Statement I is true but Statement II is false
Correct Answer Explanation
Statement II is true — \(2p_x\), \(2p_y\), and \(2p_z\) are degenerate (equal energy) in a hydrogen-like atom. Statement I is false — since \(2p_x\) and \(2p_y\) have the same energy, a transition between them involves no energy change and therefore no spectral line is observed.