Question

ldentify Dobereiners triad from the following:(Cl, Br, I) its atomic number (35.5, 79.9,126.9) &(Mg, Sr, Ba) its atomic number is(24, 87.6,137.3) 

option:- 1.) (Cl, Br, l)
2.) (Mg, Sr, Ba)​

Answer 1

Answer

( Cl ,Br , I)

Explanation

arithematic mean of mass of chlorine and iodine is equal to bromine