### Coordination Compounds

goals
What is the coordination number of Fe in $[FeCl_2(en)_2]Cl$?
Outer orbits have _____ energy level than inner orbits.
Which of the following is cationic complex?
Read the following short write-up and answer the questions at the end of it. One cationic complex has two isomers $A$ and $B$. Each has one $Co^{3+}$, five $NH_3$, one $Br^-$ and one $SO_4^{2-}$ stoichiometrically. $A$ gives white ppt with $BaCl_2$ while $B$ give yellow ppt with $AgNO_3$.
In the metal carbonyls of the general formula $M(CO)_{x}$ where M = metal; x = 4, the metal is bonded to ?