Among the following which are ambidentate ligands?
(a) `NO_(2)^(-)` (b) `NO_(3)^(-)` (c) `EDTA^(+)`
(d) `C_(2)O_(4)^(2+)` (e) `SCN^(-)` (f) `H_(2)NCH_(2)CH_(2)NH_(2)`

Options

A. (i) and (ii)
B. (iii) and (iv)
C. (i) and (vi)
D. (i) and (v)

Answer

D

Explanation

There are certain which have two or more donor atoms but in forming complexes only donor atoms in attached to metal ion, such ligands are called ambidentate ligands.
`M larr` `M larr ONO`
`M larr SCN` `M larr NCS`