question_answer

Consider the following reaction and statements:                      [JEE Main Online 08-04-2018]

\[{{[Co{{(N{{H}_{3}})}_{4}}B{{r}_{2}}]}^{+}}+B{{r}^{-}}\to [Co{{(N{{H}_{3}})}_{3}}B{{r}_{3}}]+N{{H}_{3}}\]

(I) Two isomers are produced if the reactant complex ion is a cis-isomer.

(II) Two isomers are produced if the reactant complex ion is a trans-isomer.

(III) Only one isomer is produced if the reactant complex ion is a trans-isomer.

(IV) Only one isomer is produced if the reactant complex ion is a cis-isomer.

The correct statements are:

A)  (III) and (IV)   

B)  (II) and (IV)

C)  (I) and (II)                  

D)  (I) and (III)

Correct Answer: D

Solution :