BITSAT2019ChemistryStructure of AtomActual
In a homonuclear molecule, which of the following set of orbitals is degenerated?
Options
- Aσ 1 s and σ 2 s
- Bπ 2 p x and π 2 p y
- Cπ * 2 p x and σ * 2 p z
- Dσ 2 p x and σ * 2 p z
Correct answer
B. π 2 p x and π 2 p y
Step-by-step solution
Orbitals of equal energy are called degenerated orbitals. Homonuclear molecules are the molecules composed of only one type of element and contain following set of degenerated orbitals: As, energy of, σ 2 s > σ 1 s π 2 p x ≈ 2 p y π * 2 p x < σ * 2 p z σ 2 p x < σ * 2 p z Thus, only π 2 p x and π 2 p y are degenerate orbitals.