Choose total number of correct reaction.
(i) When `CuSO_(4)` solution reacts with `NH_(3)`, complex is formed.
(ii) When `CuSO_(4)` solution react withh `PH_(3)`, complex is formed.
(iii) `C_(12)H_(22)O_(11) overset("conc. "H_(2)SO_(4)) to 2C+11H_(2)O`
(iv) `underset(("excess"))(NH_(3))+Cl_(2) overset(Delta) to NH_(4)Cl+N_(2)`

Answer

7

Explanation

(ii) `CuSO_(3)+PH_(3) to underset(("black"))(Cu_(3)P_(2))`
(iii) `SbF_(5)+XeF_(4) to [XeF_(3)]^(+)[SbF_(6)]^(-)`