According to Aufbau principle, the electron has a tendency to occupy that sub-shell which has:

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Answer 1

The Aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels (e.g., 1s before 2s). In this way, the electrons of an atom or ion form the most stable electron configuration possible.

Answer 2

The Aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels (e.g., 1s before 2s). In this way, the electrons of an atom or ion form the most stable electron configuration possible.

According to Aufbau principle, the electron has a tendency to occupy that sub-shell which has:

lowest energy

highest energy

average energy

no energy

The Aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels (e.g., 1s before 2s). In this way, the electrons of an atom or ion form the most stable electron configuration possible.

Which pair of sub-shell has same energy for above described exceptional element under rule(a)?

Which pair of sub-shell has same energy for above described exceptional element under rule (a)?

According to Hund's rule, the distribution of electron within the various orbitals of a given sub-shell is one which is associated with :

Aufbau principle fails to explain the configuration of element with atomic number:

The aufbau principle is violated in _______.

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Electron Configuration