COORDINATION COMPOUNDS
28786
The formula of ferrocene is
1 \({\left[ {Fe{{(CN)}_6}} \right]^{4 - }}\)
2 \({\left[ {Fe{{(CN)}_6}} \right]^{3 - }}\)
3 \(\left[ {Fe{{(CO)}_5}} \right]\)
4 \(\left[ {{{\left( {{C_5}{H_5}} \right)}_2}Fe} \right]\)
Explanation:
It’s obvious.