why do we have in chromium (Ar)4s1 3d5 as why s suborbital is donating one electron to the d orbit ?????
can any ne plz. answer
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half filled and completely filled orbitals are more stable than partially filled.Copper and chromium should be partially filled according to Hund's rule. but as it is not stable it attains special configuration and becomes half filled.
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1S2 2S2 2P6 3S2 3P6 4S13D5
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