Question

Define ‘Dobereiner’s law of traids’ and give one example​

Answer 1

Explanation:

Dobereiner law of triads states that the average of the atomic masses of the first and third element in a triad will be roughly equal to the atomic mass of the second element in that triad. ... The atomic mass of calcium is 40g/mol. The atomic mass of strontium is 88g/mol. The atomic mass of barium is 137g/mol.

Answer 2

Answer:

Dobereiner's Triads are groups of three elements arranged in such a way that the atomic weight of the middle element is almost the average of the other two. The elements of triad have almost similar properties. For example, consider Li,Na and K with atomic weights 7,23 and 39 g/mol respectively. 27+39=23.