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KCET2007Chemistryd and f Block Elements

The electronic configuration of Cr ³⁺ is

Options

  1. A[ Ar ] 3 d⁴ 4 s²
  2. B[ Ar ] 3 d³ 4 s⁰
  3. C[ Ar ] 3 d² 4 s¹
  4. D[ Ar ] 3 d⁵ 4 s¹

Correct answer

B. [ Ar ] 3 d³ 4 s⁰

Step-by-step solution

Cr (24):[ Ar ] 3 d⁵ 4 s¹ Cr ³⁺:[ Ar ] 3 d³ 4 s⁰

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