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Lingareddy 1 Best Answer
9:6:1 because the abandoned of chlorine is 35 cl :37 cl= 3:1 Formula is (a+b)^n Where n= no of chlorine or bromines a,b= abamdounce of chlorine or bromines In this problem a=3,b=1 ,n= 2 So (3+1)^2=9:6:1 (a+b)^2=a2+2ab+b2