Multiple choice

Which of the following transition metal ions have only two unpaired electrons?

  1. Mn2+
  2. V3+
  3. Fe2+
  4. Cr4+
  5. Co3+ Select the correct answer using codes given below:

  1. 1, 3 and 5

  2. 2, 3 and 4

  3. 2 and 4

  4. 3 and 5

  5. 3, 4 and 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

V3+: [Ar] 3d2; 2 unpaired electrons Cr4+: [Ar] 3d2; 2 unpaired electrons

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