A metal complex having compositionhas been isolated in two forms (X) and (Y).The form (X) reacts withto give a white precipitate readily soluble in aqueous ammonia,whereas (Y) gives a pale-yellow precipitate soluble in concentrated ammonia. Choose the correct statement regarding the complex X and Y. (i) Both complexes have same Van’t Hoff factor for same extent of dissociation (ii) Both complexes have exactly same conductivity in H_(2)O (iii) In both the complexesis involved only to secondary valency (iv) In both the complexes electronic configuration oft_(2_(g)) subshell is same. The correct choice is :

A metal complex having compositionhas been isolated in two forms (X) a

1.	A metal complex having compositionhas been isolated in two forms (X) and (Y).The form (X) reacts withto give a white precipitate readily soluble in aqueous ammonia,whereas (Y) gives a pale-yellow precipitate soluble in concentrated ammonia. Choose the correct statement regarding the complex X and Y. (i) Both complexes have same Van’t Hoff factor for same extent of dissociation (ii) Both complexes have exactly same conductivity in H_(2)O (iii) In both the complexesis involved only to secondary valency (iv) In both the complexes electronic configuration oft_(2_(g)) subshell is same. The correct choice is :
Answer» I,ii and iii I,ii,iii and iv ii,iii and iv I, iii and iv Solution :`X: [CR(NH_(3))_(4) ClBr] Cl, Y: [Cr(NH_(3))_(4) Cl_(2)]Br` Both COMPLEXES have same van’t Hoff factor. Both complex form different ions in water hence conductivity is not exactly same In both complexes `NH_3` is involved in secondary valency In both complexes’ electronic configuration ofis same Hence A, C, D are CORRECT statements.