Among the following which is most stable ?
`(1) underset((X))([Fe(CN)_(6)]^(3-))" and "underset((Y))([FeF_(6)]^(3-))`
`(2) underset((S))([Fe(CN)_(6)]^(3-))" and "underset((T))([Fe(CN)_(6)]^(4-))`
`(3) underset((P))([Cr(CN)_(6)]^(N-6))" and "underset((Q))([Cr(CN)_(6)]^(n-4))` Choose the correct code

Options

A. `1-X,2-T,3-Q`
B. `1-X,2-S,3-Q`
C. `1-X,2-S,3-P`
D. `1-Y,2-T,3-Q`

Answer

C

Explanation

`CN^(-)gtF` ( higher the charge on the metal greater the stability . 6 coordinate complexes are more stable than four coordinated one.