Question

A,B and C are elements of Dobereiner’s triad. If the atomic mass of A is 7 and that of C s 23 what will be the atomic mass of B

Answer 1

according to dobereiner's traid the average atomic mass of traid is equal to the mass of the middle element's atomic mass so 23+7=30÷2=15approxx... remember to use approxx because the traid law is not gives you the exact value of atomic mass of the middle one bye i am also studying this chapter bye