Which among the following will be named as dibromidobis ( ethyene

Options

A. `[Cr(en)_(3) ]Br_(3) `
B. `[Cr (en)_(2) Br_(2) ]Br `
C. `[Cr(en)Br_(4) ]^(-)`
D. `[Cr(en)Br_(2) ]Br`

Answer

B

Explanation

Two Br. Two (en) and one Cr are parts of the complex charge on the complex is
`{:(2(Br)=-2),(2(en)=0),(1(Cr)=+3):}}=+1`
thus , complex ion is ` [Cr(en)_(2)Br_(2)]^(+)`
Since , anion is bromide , thus complex is ` [Cr(en)_(2)Br_(2)]` Br.