Subject: Physical Chemistry · Chapter: Quantum Chemistry · Topic: Quantum Chemistry – General · Exam: NET JUNE 2016 · Marks: 2 · Difficulty: Medium
Two opposite sides (in the y direction) of a square box of side L are slightly stretched. Consider the following four statements:
A. The point group changes from $\mathrm{D}_{4h}$ to $\mathrm{D}_{2h}$
B. The (1,2) and (2,1) energy levels remain doubly degenerate
C. Both the energy levels are lowered and the energy of the (1, 2) level higher than that of (2, 1) level.
D. Both the energy levels are lowered and the energy of the (1, 2) level lower than that of (2, 1) level
The two correct statements are: