![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-53/ti_inject-812ce.png)
Point out the oxidation number of metal ion in the coordination ions: (a) [Cu(NH 3 ) 4 ] 2+ (b) [CuBr 4 ] 2- (c) [Cu(CN) 2 ] - (d) [Cr(NH 3 ) 4 (CO)] 3+ (e) [PtCl 4 ] 2- (f)[Co(NH 3 ) 2 (NO 2 ) 4 ] - (g) Fe(CO) 5 (h) [ZnCl 4 ] 2- ( i ) [Co( en ) 3 ] 2+