Question

In $H$-atom or one electron system energy levels of orbitals of a shell are degenerates whereas in many electron system energy levels of orbitals of a shell are non degenerates because of :

• A. different ionization energy
• B. different electron affinity
• C. different penetration and shielding effect
• D. different atomic radii

Answer 1

Answer: (C)

different penetration and shielding effect

In H-atom or one electron system energy levels of orbitals of a shell are degenerates whereas in many electron system energy levels of orbitals of a shell are non degenerates because of different penetration and shielding effect.