Which among the following will be named as dibromidobis- (ethylenediamine) chromium (III) bromide?

Two Br, two (en) and one Cr are parts of complex. Charge on the complex is2Br=−22en=01Cr=+3=+1Thus, complex ion is [Cr(en)2Br2]+.Since, anion is bromide thus, complex is [Cr(en)2 Br2]Br.