Number of ions present in `K_4[Fe(CN)_6]`

Options

A. (a) `2`
B. (b) `10`
C. (c) `3`
D. (d) `5`

Answer

D

Explanation

`K_4[Fe(CN)_6]` is a complex salt. On ionisation it will dissociate in `4K^(+)` and `[Fe(CN)_6]^(4-)` ion. Hence, in `K_4[Fe(CN)_6]` is a complex salt. On ionisation it will dissociate in `4K^(+)` and `[Fe(CN)_6]^(4-)` ion. Hence, in `K_4[Fe(CN)_6]` five ions are present.