Question
- Define principal quantum number(n).
- Write the electronic configuration of $Cr^+$ [Atomic number of Cr = 24].
- Define Pauli's exclusion principle.
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Answer
- Principal quantum number tells the principal energy level or shell to which the electron belongs. It gives the information about the distance and the energy of the electron.
- $Cr^+ = 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5$
- Pauli's exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.
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