Describe the process of Sublevel Energy Splitting in Multi-Electron-Atoms?
Multi-Electron Atoms
Atoms having more than one electron are termed as multi electron atom.
If the nucleus is having more positive charge it will attract the electron towards itself and hence lowering the energy.
whereas if there are more number of electrons in the outer shell it will cause repulsion which is known as shielding. In this case, outer electron move away and energy becomes higher.
Actual nuclear charge a particular electron feels is called Zeff , Zeff=Z(nuclear charge)-S(average no. of electrons)
Sublevel Splitting means splitting of levels into sub-levels . Each energy level is split into sub-levels of different energy. Splitting is caused by penetration and its effect on shielding
For given n value, Lower is the value of l, indicates a lower energy sub-level.
l is the azimuthal quantum number and n is the principle quantum number.
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