The correct electronic configuration of Cr is?
Correct answer: C. [Ar]3d54s1
- A. [Ar]4s23d4
- B. [Ar) 4s23d4
- C. [Ar]3d54s1
- D. [Ar)4s13d6
Explanation
The correct electronic configuration of Chromium (Cr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵.
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About Electronic Structure of d-Block Elements
The electronic structure of d-block elements covers the filling of the (n-1)d and ns orbitals, general electronic configurations, and the exceptions shown by chromium and copper. It explains how partially filled d orbitals produce variable oxidation states, coloured ions, magnetic behaviour and complex formation, while distinguishing transition elements from elements with completely filled d subshells.
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