Question

calculate the average atomic mass of element B according to dobereiner triads ​

Answer 1

Answer:

${{{If A,B,C are the elements in dobereiner triad then ,the average of the atomic masses extreme (first and third)element is equal to the atomic mass of the middle element. Then according to theory,(A+C)/2=B . 39+7/2=23. Hence the atomic mass of B is 23.}}}}$

Explanation:

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