Question

Question #3de2f

Answer 1

`[Ni(eta^5-C_5H_5)_2]` is a 20 electron complex......

Explanation:

We have `Ni^(2+)`, i.e. `"d^8`, and `2xx "6-electron donors"`; alternatively we have a `d^10` metal centre, and `2xx"5-electron donors"`.