`[Co (H_(2) O) _(6)]Cl_(3) overset(NH_(3)) to A+B+C`
A, B and C are complexs with different coordination entity without any `H_(2)O` molecule. Among these C shows two different spatial arrangements one is green and another is violet complex respectively. Colour of A and B complexes are yellow & purple respectively. Then which of the following statement is CORRECT ?

Options

A. Aqueous solution of yellow complex shows Vant hoff factor (i) = 3 in colligative properties.
B. One mole of green complex produces one mole AgCl on reaction with `aGno_(3)`
C. Green and violet complexes are optical isomer respectively.
D. Yellow and purple are geometrical isomers to each other.

Answer

B

Explanation

`[Co(CN_(3)) _(6)] Cl_(5):` yellow
`[Co(NH_(5)) _(5) Cl] Cl_(2):` purple
cis : `[Co (NH_(3)) _(4) Cl_(2)]Cl :` violet
trans : `[Co (NH_(5)) _(4) Cl_(2) ] Cl :` green