Question

What is the characteristics of Dobereine triads ​

Answer 1

Answer:

Explanation:

the avg of the atomic mass of the first and third element was equal to atomic mass of the second element in triads

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Answer 2

@brainly

if you put these elements in order of their atomic masses, the average of the molar mass of the first and third elements in the triad is the molar mass of the second element. Let's look at an example.

The halogens, chlorine, bromine, and iodine, have atomic masses ≈ 35 g/mole, ≈ 80 g/mole, and ≈ 127 g/mole respectively. These values are rounded to the nearest g/mole. If we take the average of the masses of chlorine and iodine we get:

1/2(35 g/mole + 127 g/mole) = 81 g/mole, which is very close to bromine's atomic mass of 80 g/mole.