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(i) Define principal quantum number (n). (ii) Write the electronic configuration of Cr+ [Atomic number of Cr = 24](iii) Define Pauli's Exclusion principle. |
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Answer» (i) 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. (ii) Cr+ = 1s2 , 2s2 , 2p6 , 3s2 , 3p6 , 3d5 (iii) 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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