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The 3s and 3p orbitals have identical energies in the hydrogen atom, but in chlorine atom their energies are much different. Explain.

The 3s and 3p orbitals have identical energies in the hydrogen atom, but in chlorine atom their energies are much different. Explain.
 

Grade:12th pass

1 Answers

Umakant biswal
5359 Points
4 years ago
@ ajanta 
frst of all , hydrogen have 1 electron only , so, its very small compared to chlorine , and being a monoelectronic species , if that electron will get energy somewhere to exicte to any other orbitals , then that will not count at all , and approximate as very small , 
so, they both orbitals are said to be degenerate , 
while in the case of chlorine they have large no of electrons and being electronegativity , it have a much diffrence in energy level when half of the electron will migrate to anathor orbital or excite to anathor orbitals , 
HOPE IT CLEARS NOW 

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