Multiple choice

Which of the following transition metal metallocenes has the highest electron count?

  1. Cobaltocene

  2. Nickelocene

  3. Rhodocene

  4. Ferrocene

  5. Manganocene

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

With 20 valence electrons, nickelocene, [Ni(η5-C5H5)2], has the highest electron count of the transition metal metallocenes.