Question $(2)$:

Namethe complex ions:

a$)[Pt(N{H}_3{)}_{3}C{l}_3{]}^{+}$

b$)[Cr(SCN)C{l}_5{]}^{3-}$

c$)[Co(C_2{O}_4{)}_3{]}^{3-}$

d$)$ CoFe$(N{H}_3{)}_6(CN{)}_6$

e$)$ Triammineaquadichlorocobalt$($III$)$ chloride