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MDCAT
Chemistry
2021

Chemistry · D and f Block Elements

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

The correct electronic configuration of Cr is?

Options
  • 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.

The correct electronic configuration of Chromium (Cr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵.

The correct electronic configuration of Chromium (Cr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵.

The correct electronic configuration of Chromium (Cr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵.

The correct electronic configuration of Chromium (Cr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵.

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Tagged under Chemistry · D and f Block Elements · 2021