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Transition elements

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Question 21

Which of the following gaseous transition metal ions contain(s) exactly four unpaired electrons in its ground state?

  1. Fe2+\text{Fe}^{2+}Fe2+
  2. Cr2+\text{Cr}^{2+}Cr2+
  3. Co3+\text{Co}^{3+}Co3+

1, 2 and 3

Only 1 and 2

Only 1 and 3

Only 2 and 3

Transition elements Questions

  1. A Level
  2. /Chemistry
  3. /Transition elements