Question

outer electronic configuration of chromium is 3dp5 4s1 instead 3d4 4s2.why?​

Answer 1

Answer:

Electronic configuration of Cr is [Ar]3d5 4s1, instead of the expected [Ar]3d4 4s2. This is so because half filled d orbitals have extra stability. So in case of Cr, one electron from the 4s orbital goes to the 3d orbital to make it half filled, and Cr attains extra stable state.

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Answer 2

Answer:

Chromium has the electronic configuration 4s13d5 rather than 4s23d4 because. Cr has [Ar]4s13d5 electronic configuration because half filled orbital are more stable than other orbitals.

Explanation:

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