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  • General Chemistry: Atomic Structure, Transition Elements, and Organic Chemistry
  • Which of the following transition metal ions have four un...
Multiple choice

Which of the following transition metal ions have four unpaired electrons?

  1. Cr3+
  2. V3+
  3. Fe2+
  4. Co3+

  1. Only 1 and 2

  2. Only 1 and 3

  3. Only 2 and 3

  4. Only 2 and 4

  5. Only 3 and 4

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It is correct. Fe2+: [Ar] 3d6; 4 unpaired electrons Co3+: [Ar] 3d6; 4 unpaired electrons

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