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Answer» Dobereiners traids are group of ATOMS arranged in such a WAY that the atomic weight of the MIDDLE element is almost the average of the other two example:Traid 1 this traid was made up of alkali metals lithium SODIUM and potassium The arithmetic mean of the masses of potassium and lithium corresponds to 23.02 which is almost EQUAL to the atomic mass of sodium

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Dobereiners traids are group of ATOMS arranged in such a WAY that the atomic weight of the MIDDLE element is almost the average of the other two

example:Traid 1

this traid was made up of alkali metals lithium SODIUM and potassium

The arithmetic mean of the masses of potassium and lithium corresponds to 23.02 which is almost EQUAL to the atomic mass of sodium

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