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  4. The electronic configuration of chromium (Z = 24) is

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Q. The electronic configuration of chromium (Z = 24) is

MP PMTMP PMT 2010Classification of Elements and Periodicity in Properties

Solution:

Electronic configuration of
$ Cr_{24} \, = \underbrace{1s^2}_{2} \, \underbrace{ 2s^2 \, 2p^6}_{ 8 } , \, \underbrace{ 3s^2, \, 3p^6 \, 3d^5 }_{ 13}, \, \underbrace{ 4s^1 }{ 1} $
Thus, the electronic configuration of Cr is 2, 8, 13, 1.