Which among the following will be named as dibromidobis (ethylene diamine ) chromium (III) bromide ?

Which among the following will be named as dibromidobis (ethylene diamine ) chromium (III) bromide ?
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Which among the following will be named as dibromidobis (ethylene diamine ) chromium (III) bromide ? A. `[Cr(en)_(3) ... )]^(-)` D. `[Cr(en)Br_(2)]Br`
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