List of top Chemistry Questions on Order of reaction asked in CBSE CLASS XII

Write IUPAC names of the following coordination entities:
(a) \( [Fe(en)_2Cl_2]^+ \) 
(b) \( [Co(NH_3)_4(H_2O)Br]SO_4 \)
(c) \( [Ni(CN)_4]^{2-} \)