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Krypton $(_{36}Kr)$ has the electronic configuration $(_{18}Ar) \ 4s^2, 3d^{10}, 4p^6$. The $37^{th}$ electron will go into which one of the following sub-levels?

What is the spin magnetic moment of an electron,excluding its orbital angular momentum?

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Considering the ground state of $Cr$ atom $(Z = 24)$,the number of electrons associated with azimuthal quantum numbers $l = 1$ and $l = 2$ are,respectively:

The number of unpaired electrons in a carbon atom in the excited state is:

Which of the following is violating Hund's rule?

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